396121961220 has 24 divisors (see below), whose sum is σ = 1109141491584. Its totient is φ = 105632522976.

The previous prime is 396121961201. The next prime is 396121961237. The reversal of 396121961220 is 22169121693.

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 7 ways as a sum of consecutive naturals, for example, 3301016284 + ... + 3301016403.

It is an arithmetic number, because the mean of its divisors is an integer number (46214228816).

Almost surely, 2^396121961220 is an apocalyptic number.

396121961220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396121961220 is an abundant number, since it is smaller than the sum of its proper divisors (713019530364).

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

396121961220 is a wasteful number, since it uses less digits than its factorization.

396121961220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6602032699 (or 6602032697 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 396121961220 in words is "three hundred ninety-six billion, one hundred twenty-one million, nine hundred sixty-one thousand, two hundred twenty".