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102201212 = 22171502959
BaseRepresentation
bin1100001011101…
…11011101111100
321010022100201002
412011313131330
5202130414322
614050305432
72350460501
oct605673574
9233270632
10102201212
1152765313
122a288278
13182346b9
14d8054a8
158e8bc92
hex617777c

102201212 has 12 divisors (see below), whose sum is σ = 189372960. Its totient is φ = 48094656.

The previous prime is 102201173. The next prime is 102201217. The reversal of 102201212 is 212102201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102201193 and 102201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751412 + ... + 751547.

It is an arithmetic number, because the mean of its divisors is an integer number (15781080).

Almost surely, 2102201212 is an apocalyptic number.

It is an amenable number.

102201212 is a deficient number, since it is larger than the sum of its proper divisors (87171748).

102201212 is a wasteful number, since it uses less digits than its factorization.

102201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502980 (or 1502978 counting only the distinct ones).

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

The square root of 102201212 is about 10109.4615089034. The cubic root of 102201212 is about 467.5399026061.

Adding to 102201212 its reverse (212102201), we get a palindrome (314303413).

It can be divided in two parts, 102201 and 212, that multiplied together give a palindrome (21666612).

The spelling of 102201212 in words is "one hundred two million, two hundred one thousand, two hundred twelve".

Divisors: 1 2 4 17 34 68 1502959 3005918 6011836 25550303 51100606 102201212