22121111121102 has 48 divisors (see below), whose sum is σ = 55078715039712. Its totient is φ = 6285398575680.

The previous prime is 22121111121097. The next prime is 22121111121113. The reversal of 22121111121102 is 20112111112122.

It is a happy number.

22121111121102 is a `hidden beast` number, since 221 + 211 + 11 + 121 + 102 = 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 23 ways as a sum of consecutive naturals, for example, 484961653 + ... + 485007264.

It is an arithmetic number, because the mean of its divisors is an integer number (1147473229994).

Almost surely, 2^{22121111121102} is an apocalyptic number.

22121111121102 is an abundant number, since it is smaller than the sum of its proper divisors (32957603918610).

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

22121111121102 is a wasteful number, since it uses less digits than its factorization.

22121111121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969969113 (or 969969110 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 22121111121102 its reverse (20112111112122), we get a palindrome (42233222233224).

The spelling of 22121111121102 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred two".