21940223931072 has 70 divisors (see below), whose sum is σ = 65037696996228. Its totient is φ = 7313407975296.

The previous prime is 21940223931049. The next prime is 21940223931097. The reversal of 21940223931072 is 27013932204912.

It is a happy number.

21940223931072 is a `hidden beast` number, since 2 + 1 + 9 + 40 + 223 + 9 + 310 + 72 = 666.

It is a super-2 number, since 2×21940223931072² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2116142958 + ... + 2116153325.

Almost surely, 2^{21940223931072} is an apocalyptic number.

It is an amenable number.

21940223931072 is an abundant number, since it is smaller than the sum of its proper divisors (43097473065156).

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

21940223931072 is an equidigital number, since it uses as much as digits as its factorization.

21940223931072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232296307 (or 4232296288 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 21940223931072 in words is "twenty-one trillion, nine hundred forty billion, two hundred twenty-three million, nine hundred thirty-one thousand, seventy-two".