21469770120 has 64 divisors (see below), whose sum is σ = 65291656320. Its totient is φ = 5646841344.

The previous prime is 21469770073. The next prime is 21469770137. The reversal of 21469770120 is 2107796412.

It is an unprimeable number.

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, 1216684 + ... + 1234203.

It is an arithmetic number, because the mean of its divisors is an integer number (1020182130).

Almost surely, 2^21469770120 is an apocalyptic number.

21469770120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21469770120 is an abundant number, since it is smaller than the sum of its proper divisors (43821886200).

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

21469770120 is a wasteful number, since it uses less digits than its factorization.

21469770120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450974 (or 2450970 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The spelling of 21469770120 in words is "twenty-one billion, four hundred sixty-nine million, seven hundred seventy thousand, one hundred twenty".