102121220022102 has 40 divisors (see below), whose sum is σ = 228847978991016. Its totient is φ = 34037312341248.

The previous prime is 102121220022023. The next prime is 102121220022119. The reversal of 102121220022102 is 201220022121201.

It is a happy number.

102121220022102 is a `hidden beast` number, since 10 + 21 + 212 + 200 + 221 + 0 + 2 = 666.

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 polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26863243 + ... + 30428214.

Almost surely, 2^{102121220022102} is an apocalyptic number.

102121220022102 is an abundant number, since it is smaller than the sum of its proper divisors (126726758968914).

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

102121220022102 is a wasteful number, since it uses less digits than its factorization.

102121220022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57302474 (or 57302465 counting only the distinct ones).

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

Adding to 102121220022102 its reverse (201220022121201), we get a palindrome (303341242143303).

The spelling of 102121220022102 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty million, twenty-two thousand, one hundred two".