102111202021122 has 96 divisors (see below), whose sum is σ = 253009025418240. Its totient is φ = 29155914718560.

The previous prime is 102111202021111. The next prime is 102111202021181. The reversal of 102111202021122 is 221120202111201.

102111202021122 is a `hidden beast` number, since 10 + 211 + 120 + 202 + 1 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102111202021095 and 102111202021104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1476777283 + ... + 1476846425.

It is an arithmetic number, because the mean of its divisors is an integer number (2635510681440).

Almost surely, 2^{102111202021122} is an apocalyptic number.

102111202021122 is an abundant number, since it is smaller than the sum of its proper divisors (150897823397118).

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

102111202021122 is a wasteful number, since it uses less digits than its factorization.

102111202021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76508 (or 76505 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 102111202021122 its reverse (221120202111201), we get a palindrome (323231404132323).

The spelling of 102111202021122 in words is "one hundred two trillion, one hundred eleven billion, two hundred two million, twenty-one thousand, one hundred twenty-two".