21010200211992 has 64 divisors (see below), whose sum is σ = 53400466080000. Its totient is φ = 6886797747840.

The previous prime is 21010200211981. The next prime is 21010200211999. The reversal of 21010200211992 is 29911200201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010200211999) by changing a digit.

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, 3766759 + ... + 7497257.

It is an arithmetic number, because the mean of its divisors is an integer number (834382282500).

Almost surely, 2^{21010200211992} is an apocalyptic number.

It is an amenable number.

21010200211992 is an abundant number, since it is smaller than the sum of its proper divisors (32390265868008).

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

21010200211992 is a wasteful number, since it uses less digits than its factorization.

21010200211992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734416 (or 3734412 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 21010200211992 in words is "twenty-one trillion, ten billion, two hundred million, two hundred eleven thousand, nine hundred ninety-two".