21022000202000 has 80 divisors (see below), whose sum is σ = 58092796025472. Its totient is φ = 7207542921600.

The previous prime is 21022000201987. The next prime is 21022000202003. The reversal of 21022000202000 is 20200022012.

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

It is not an unprimeable number, because it can be changed into a prime (21022000202003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750771722 + ... + 750799721.

Almost surely, 2^{21022000202000} is an apocalyptic number.

21022000202000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022000202000 is an abundant number, since it is smaller than the sum of its proper divisors (37070795823472).

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

21022000202000 is a wasteful number, since it uses less digits than its factorization.

21022000202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501571473 (or 1501571457 counting only the distinct ones).

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

Adding to 21022000202000 its reverse (20200022012), we get a palindrome (21042200224012).

The spelling of 21022000202000 in words is "twenty-one trillion, twenty-two billion, two hundred two thousand".