221725223472 has 40 divisors (see below), whose sum is σ = 573003982144. Its totient is φ = 73880817984.

The previous prime is 221725223389. The next prime is 221725223479. The reversal of 221725223472 is 274322527122.

It is a self number, because there is not a number n which added to its sum of digits gives 221725223472.

It is not an unprimeable number, because it can be changed into a prime (221725223479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732058 + ... + 989625.

Almost surely, 2^221725223472 is an apocalyptic number.

It is an amenable number.

221725223472 is an abundant number, since it is smaller than the sum of its proper divisors (351278758672).

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

221725223472 is a wasteful number, since it uses less digits than its factorization.

221725223472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724377 (or 1724371 counting only the distinct ones).

The product of its digits is 188160, while the sum is 39.

The spelling of 221725223472 in words is "two hundred twenty-one billion, seven hundred twenty-five million, two hundred twenty-three thousand, four hundred seventy-two".