21196433220 has 48 divisors (see below), whose sum is σ = 60355955520. Its totient is φ = 5556578176.

The previous prime is 21196433213. The next prime is 21196433243. The reversal of 21196433220 is 2233469112.

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, 2990307 + ... + 2997386.

It is an arithmetic number, because the mean of its divisors is an integer number (1257415740).

Almost surely, 2^21196433220 is an apocalyptic number.

21196433220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21196433220 is an abundant number, since it is smaller than the sum of its proper divisors (39159522300).

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

21196433220 is a wasteful number, since it uses less digits than its factorization.

21196433220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987764 (or 5987762 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 21196433220 in words is "twenty-one billion, one hundred ninety-six million, four hundred thirty-three thousand, two hundred twenty".