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102102002221212 = 22327405166675481
BaseRepresentation
bin10111001101110001111001…
…100100101100000010011100
3111101111212010002100002122200
4113031301321210230002130
5101340314400032034322
61001053002353211500
730335424540211410
oct2715617144540234
9441455102302580
10102102002221212
112a595241507534
12b550075b60b90
1344c823cc61116
141b2da985d8d40
15bc0d926878ac
hex5cdc7992c09c

102102002221212 has 36 divisors (see below), whose sum is σ = 294961339750896. Its totient is φ = 29172000634560.

The previous prime is 102102002221183. The next prime is 102102002221259. The reversal of 102102002221212 is 212122200201201.

It is a happy number.

102102002221212 is a `hidden beast` number, since 1 + 0 + 210 + 20 + 0 + 2 + 221 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202583337489 + ... + 202583337992.

It is an arithmetic number, because the mean of its divisors is an integer number (8193370548636).

Almost surely, 2102102002221212 is an apocalyptic number.

102102002221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102102002221212 is an abundant number, since it is smaller than the sum of its proper divisors (192859337529684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102102002221212 is a wasteful number, since it uses less digits than its factorization.

102102002221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405166675498 (or 405166675493 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102102002221212 its reverse (212122200201201), we get a palindrome (314224202422413).

The spelling of 102102002221212 in words is "one hundred two trillion, one hundred two billion, two million, two hundred twenty-one thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 405166675481 810333350962 1215500026443 1620666701924 2431000052886 2836166728367 3646500079329 4862000105772 5672333456734 7293000158658 8508500185101 11344666913468 14586000317316 17017000370202 25525500555303 34034000740404 51051001110606 102102002221212