221432265671372 has 36 divisors (see below), whose sum is σ = 462955875926544. Its totient is φ = 92334689929440.

The previous prime is 221432265671321. The next prime is 221432265671399. The reversal of 221432265671372 is 273176562234122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15266971904 + ... + 15266986407.

It is an arithmetic number, because the mean of its divisors is an integer number (12859885442404).

Almost surely, 2^{221432265671372} is an apocalyptic number.

It is an amenable number.

221432265671372 is an abundant number, since it is smaller than the sum of its proper divisors (241523610255172).

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

221432265671372 is a wasteful number, since it uses less digits than its factorization.

221432265671372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30533958366 (or 30533958357 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 53.

The spelling of 221432265671372 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, two hundred sixty-five million, six hundred seventy-one thousand, three hundred seventy-two".