22021112121102 has 40 divisors (see below), whose sum is σ = 49406301724296. Its totient is φ = 7331043637008.

The previous prime is 22021112121083. The next prime is 22021112121241. The reversal of 22021112121102 is 20112121112022.

22021112121102 is a `hidden beast` number, since 220 + 211 + 1 + 21 + 211 + 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86233873 + ... + 86488860.

Almost surely, 2^{22021112121102} is an apocalyptic number.

22021112121102 is an abundant number, since it is smaller than the sum of its proper divisors (27385189603194).

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

22021112121102 is a wasteful number, since it uses less digits than its factorization.

22021112121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172723534 (or 172723525 counting only the distinct ones).

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

Adding to 22021112121102 its reverse (20112121112022), we get a palindrome (42133233233124).

The spelling of 22021112121102 in words is "twenty-two trillion, twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred two".