21022118501892 has 48 divisors (see below), whose sum is σ = 50380409533440. Its totient is φ = 6817567468032.

The previous prime is 21022118501767. The next prime is 21022118501921. The reversal of 21022118501892 is 29810581122012.

21022118501892 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5863084 + ... + 8741852.

It is an arithmetic number, because the mean of its divisors is an integer number (1049591865280).

Almost surely, 2^{21022118501892} is an apocalyptic number.

It is an amenable number.

21022118501892 is an abundant number, since it is smaller than the sum of its proper divisors (29358291031548).

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

21022118501892 is a wasteful number, since it uses less digits than its factorization.

21022118501892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895260 (or 2895258 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 42.

The spelling of 21022118501892 in words is "twenty-one trillion, twenty-two billion, one hundred eighteen million, five hundred one thousand, eight hundred ninety-two".