21002022012000 has 192 divisors, whose sum is σ = 69483842221248. Its totient is φ = 5545088000000.

The previous prime is 21002022011987. The next prime is 21002022012007. The reversal of 21002022012000 is 21022020012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002022012007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7452201 + ... + 9876200.

It is an arithmetic number, because the mean of its divisors is an integer number (361895011569).

Almost surely, 2^{21002022012000} is an apocalyptic number.

21002022012000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002022012000 is an abundant number, since it is smaller than the sum of its proper divisors (48481820209248).

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

21002022012000 is a wasteful number, since it uses less digits than its factorization.

21002022012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17328530 (or 17328512 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21002022012000 its reverse (21022020012), we get a palindrome (21023044032012).

The spelling of 21002022012000 in words is "twenty-one trillion, two billion, twenty-two million, twelve thousand".