221375396 has 24 divisors (see below), whose sum is σ = 427381920. Its totient is φ = 99492800.

The previous prime is 221375393. The next prime is 221375417. The reversal of 221375396 is 693573122.

It is not an unprimeable number, because it can be changed into a prime (221375393) 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, 24350 + ... + 32181.

It is an arithmetic number, because the mean of its divisors is an integer number (17807580).

Almost surely, 2^221375396 is an apocalyptic number.

It is an amenable number.

221375396 is a deficient number, since it is larger than the sum of its proper divisors (206006524).

221375396 is a wasteful number, since it uses less digits than its factorization.

221375396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56635 (or 56633 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 221375396 is about 14878.6893239963. The cubic root of 221375396 is about 604.9364922067.

The spelling of 221375396 in words is "two hundred twenty-one million, three hundred seventy-five thousand, three hundred ninety-six".