221479376732 has 12 divisors (see below), whose sum is σ = 387592399656. Its totient is φ = 110738691120.

The previous prime is 221479376687. The next prime is 221479376753. The reversal of 221479376732 is 237673974122.

221479376732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221479376732² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501878 + ... + 833570.

It is an arithmetic number, because the mean of its divisors is an integer number (32299366638).

Almost surely, 2^221479376732 is an apocalyptic number.

It is an amenable number.

221479376732 is a deficient number, since it is larger than the sum of its proper divisors (166113022924).

221479376732 is a wasteful number, since it uses less digits than its factorization.

221479376732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498628 (or 498626 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 53.

The spelling of 221479376732 in words is "two hundred twenty-one billion, four hundred seventy-nine million, three hundred seventy-six thousand, seven hundred thirty-two".