32221220412 has 12 divisors (see below), whose sum is σ = 75182847656. Its totient is φ = 10740406800.

The previous prime is 32221220393. The next prime is 32221220459. The reversal of 32221220412 is 21402212223.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent 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, 1342550839 + ... + 1342550862.

Almost surely, 2^32221220412 is an apocalyptic number.

It is an amenable number.

32221220412 is an abundant number, since it is smaller than the sum of its proper divisors (42961627244).

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

32221220412 is a wasteful number, since it uses less digits than its factorization.

32221220412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685101708 (or 2685101706 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 32221220412 its reverse (21402212223), we get a palindrome (53623432635).

The spelling of 32221220412 in words is "thirty-two billion, two hundred twenty-one million, two hundred twenty thousand, four hundred twelve".