21102202019974 has 16 divisors (see below), whose sum is σ = 31692141684000. Its totient is φ = 10538155675584.

The previous prime is 21102202019923. The next prime is 21102202020007. The reversal of 21102202019974 is 47991020220112.

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, 51223864 + ... + 51634180.

It is an arithmetic number, because the mean of its divisors is an integer number (1980758855250).

Almost surely, 2^{21102202019974} is an apocalyptic number.

21102202019974 is a deficient number, since it is larger than the sum of its proper divisors (10589939664026).

21102202019974 is a wasteful number, since it uses less digits than its factorization.

21102202019974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441807.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 21102202019974 in words is "twenty-one trillion, one hundred two billion, two hundred two million, nineteen thousand, nine hundred seventy-four".