21112112022102 has 12 divisors (see below), whose sum is σ = 45742909381260. Its totient is φ = 7037370674028.

The previous prime is 21112112022097. The next prime is 21112112022193. The reversal of 21112112022102 is 20122021121112.

21112112022102 is a `hidden beast` number, since 211 + 1 + 211 + 20 + 221 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1172895112339 = 21112112022102 / (2 + 1 + 1 + 1 + 2 + 1 + 1 + 2 + 0 + 2 + 2 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586447556152 + ... + 586447556187.

It is an arithmetic number, because the mean of its divisors is an integer number (3811909115105).

Almost surely, 2^{21112112022102} is an apocalyptic number.

21112112022102 is an abundant number, since it is smaller than the sum of its proper divisors (24630797359158).

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

21112112022102 is a wasteful number, since it uses less digits than its factorization.

21112112022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172895112347 (or 1172895112344 counting only the distinct ones).

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

Adding to 21112112022102 its reverse (20122021121112), we get a palindrome (41234133143214).

The spelling of 21112112022102 in words is "twenty-one trillion, one hundred twelve billion, one hundred twelve million, twenty-two thousand, one hundred two".