21112000022000 has 80 divisors (see below), whose sum is σ = 51544436129472. Its totient is φ = 8362811577600.

The previous prime is 21112000021997. The next prime is 21112000022017. The reversal of 21112000022000 is 22000021112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51036719 + ... + 51448718.

Almost surely, 2^{21112000022000} is an apocalyptic number.

21112000022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112000022000 is an abundant number, since it is smaller than the sum of its proper divisors (30432436107472).

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

21112000022000 is a wasteful number, since it uses less digits than its factorization.

21112000022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102485563 (or 102485547 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21112000022000 its reverse (22000021112), we get a palindrome (21134000043112).

The spelling of 21112000022000 in words is "twenty-one trillion, one hundred twelve billion, twenty-two thousand".