221992783272 has 128 divisors (see below), whose sum is σ = 703144713600. Its totient is φ = 64287489024.

The previous prime is 221992783253. The next prime is 221992783291. The reversal of 221992783272 is 272387299122.

221992783272 is a `hidden beast` number, since 2 + 219 + 92 + 78 + 3 + 272 = 666.

It is an interprime number because it is at equal distance from previous prime (221992783253) and next prime (221992783291).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2277478 + ... + 2372949.

It is an arithmetic number, because the mean of its divisors is an integer number (5493318075).

Almost surely, 2^221992783272 is an apocalyptic number.

It is an amenable number.

221992783272 is an abundant number, since it is smaller than the sum of its proper divisors (481151930328).

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

221992783272 is a wasteful number, since it uses less digits than its factorization.

221992783272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650472 (or 4650462 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 221992783272 in words is "two hundred twenty-one billion, nine hundred ninety-two million, seven hundred eighty-three thousand, two hundred seventy-two".