102221512 has 16 divisors (see below), whose sum is σ = 194914800. Its totient is φ = 50244240.

The previous prime is 102221479. The next prime is 102221513. The reversal of 102221512 is 215122201.

It is a happy number.

It is a super-2 number, since 2×102221512² = 20898475031132288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102221513) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 107814 + ... + 108757.

It is an arithmetic number, because the mean of its divisors is an integer number (12182175).

Almost surely, 2^102221512 is an apocalyptic number.

It is an amenable number.

102221512 is a deficient number, since it is larger than the sum of its proper divisors (92693288).

102221512 is a wasteful number, since it uses less digits than its factorization.

102221512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216636 (or 216632 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 102221512 is about 10110.4654690078. The cubic root of 102221512 is about 467.5708560280.

Adding to 102221512 its reverse (215122201), we get a palindrome (317343713).

The spelling of 102221512 in words is "one hundred two million, two hundred twenty-one thousand, five hundred twelve".