221332009992 has 64 divisors (see below), whose sum is σ = 570978667200. Its totient is φ = 71443088640.

The previous prime is 221332009973. The next prime is 221332009993. The reversal of 221332009992 is 299900233122.

It is not an unprimeable number, because it can be changed into a prime (221332009993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403267 + ... + 778002.

It is an arithmetic number, because the mean of its divisors is an integer number (8921541675).

Almost surely, 2^221332009992 is an apocalyptic number.

It is an amenable number.

221332009992 is an abundant number, since it is smaller than the sum of its proper divisors (349646657208).

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

221332009992 is a wasteful number, since it uses less digits than its factorization.

221332009992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181526 (or 1181522 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The spelling of 221332009992 in words is "two hundred twenty-one billion, three hundred thirty-two million, nine thousand, nine hundred ninety-two".