39221220812 has 12 divisors (see below), whose sum is σ = 72674615160. Its totient is φ = 18457045056.

The previous prime is 39221220809. The next prime is 39221220821. The reversal of 39221220812 is 21802212293.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288391262 + ... + 288391397.

It is an arithmetic number, because the mean of its divisors is an integer number (6056217930).

Almost surely, 2^39221220812 is an apocalyptic number.

It is an amenable number.

39221220812 is a deficient number, since it is larger than the sum of its proper divisors (33453394348).

39221220812 is a wasteful number, since it uses less digits than its factorization.

39221220812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576782680 (or 576782678 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 39221220812 in words is "thirty-nine billion, two hundred twenty-one million, two hundred twenty thousand, eight hundred twelve".