22011111023100 has 72 divisors (see below), whose sum is σ = 63686207988480. Its totient is φ = 5869562623680.

The previous prime is 22011111023039. The next prime is 22011111023117. The reversal of 22011111023100 is 132011111022.

It is a super-2 number, since 2×22011111023100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22011111023100.

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, 29462779 + ... + 30200621.

Almost surely, 2^{22011111023100} is an apocalyptic number.

22011111023100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011111023100 is an abundant number, since it is smaller than the sum of its proper divisors (41675096965380).

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

22011111023100 is a wasteful number, since it uses less digits than its factorization.

22011111023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837299 (or 837292 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 22011111023100 its reverse (132011111022), we get a palindrome (22143122134122).

The spelling of 22011111023100 in words is "twenty-two trillion, eleven billion, one hundred eleven million, twenty-three thousand, one hundred".