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102221012 = 22316911193
BaseRepresentation
bin1100001011111…
…00010011010100
321010100100212102
412011330103110
5202132033022
614050541232
72350602305
oct605742324
9233310772
10102221012
1152779183
122a297818
131824070a
14d80c7ac
158e92a92
hex617c4d4

102221012 has 24 divisors (see below), whose sum is σ = 185079552. Its totient is φ = 49348800.

The previous prime is 102220997. The next prime is 102221071. The reversal of 102221012 is 210122201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102220984 and 102221002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85088 + ... + 86280.

It is an arithmetic number, because the mean of its divisors is an integer number (7711648).

Almost surely, 2102221012 is an apocalyptic number.

It is an amenable number.

102221012 is a deficient number, since it is larger than the sum of its proper divisors (82858540).

102221012 is a wasteful number, since it uses less digits than its factorization.

102221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102221012 is about 10110.4407421240. The cubic root of 102221012 is about 467.5700936776.

Adding to 102221012 its reverse (210122201), we get a palindrome (312343213).

The spelling of 102221012 in words is "one hundred two million, two hundred twenty-one thousand, twelve".

Divisors: 1 2 4 31 62 124 691 1193 1382 2386 2764 4772 21421 36983 42842 73966 85684 147932 824363 1648726 3297452 25555253 51110506 102221012