21333929922 has 54 divisors (see below), whose sum is σ = 46727050617. Its totient is φ = 7034675472.

The previous prime is 21333929909. The next prime is 21333929927. The reversal of 21333929922 is 22992933312.

21333929922 is a `hidden beast` number, since 2 + 1 + 3 + 339 + 299 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16782943401 + 4550986521 = 129549^2 + 67461^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=103281.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21333929927) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 107205579 + ... + 107205777.

Almost surely, 2^21333929922 is an apocalyptic number.

21333929922 is an abundant number, since it is smaller than the sum of its proper divisors (25393120695).

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

21333929922 is an equidigital number, since it uses as much as digits as its factorization.

21333929922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 377 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The spelling of 21333929922 in words is "twenty-one billion, three hundred thirty-three million, nine hundred twenty-nine thousand, nine hundred twenty-two".