102251217102 has 32 divisors (see below), whose sum is σ = 213169207680. Its totient is φ = 32657220960.

The previous prime is 102251217017. The next prime is 102251217127. The reversal of 102251217102 is 201712152201.

It is a happy number.

It is a super-2 number, since 2×102251217102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2220148 + ... + 2265735.

It is an arithmetic number, because the mean of its divisors is an integer number (6661537740).

Almost surely, 2^102251217102 is an apocalyptic number.

102251217102 is an abundant number, since it is smaller than the sum of its proper divisors (110917990578).

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

102251217102 is a wasteful number, since it uses less digits than its factorization.

102251217102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486048.

The product of its (nonzero) digits is 560, while the sum is 24.

Adding to 102251217102 its reverse (201712152201), we get a palindrome (303963369303).

The spelling of 102251217102 in words is "one hundred two billion, two hundred fifty-one million, two hundred seventeen thousand, one hundred two".