21022000022000 has 40 divisors (see below), whose sum is σ = 50831196058032. Its totient is φ = 8408800008000.

The previous prime is 21022000021999. The next prime is 21022000022027. The reversal of 21022000022000 is 22000022012.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5255498006 + ... + 5255502005.

Almost surely, 2^{21022000022000} is an apocalyptic number.

21022000022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022000022000 is an abundant number, since it is smaller than the sum of its proper divisors (29809196036032).

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

21022000022000 is a wasteful number, since it uses less digits than its factorization.

21022000022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511000034 (or 10511000018 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 21022000022000 its reverse (22000022012), we get a palindrome (21044000044012).

The spelling of 21022000022000 in words is "twenty-one trillion, twenty-two billion, twenty-two thousand".