21112022100100 has 72 divisors (see below), whose sum is σ = 48225684886400. Its totient is φ = 8000115984000.

The previous prime is 21112022100053. The next prime is 21112022100139. The reversal of 21112022100100 is 100122021112.

It is a super-2 number, since 2×21112022100100² (a number of 27 digits) contains 22 as substring.

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, 75672661 + ... + 75951139.

Almost surely, 2^{21112022100100} is an apocalyptic number.

21112022100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112022100100 is an abundant number, since it is smaller than the sum of its proper divisors (27113662786300).

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

21112022100100 is a wasteful number, since it uses less digits than its factorization.

21112022100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318413 (or 318406 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21112022100100 its reverse (100122021112), we get a palindrome (21212144121212).

The spelling of 21112022100100 in words is "twenty-one trillion, one hundred twelve billion, twenty-two million, one hundred thousand, one hundred".