221375602 has 8 divisors (see below), whose sum is σ = 379501056. Its totient is φ = 94875252.

The previous prime is 221375599. The next prime is 221375603. The reversal of 221375602 is 206573122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221375603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7906258 + ... + 7906285.

It is an arithmetic number, because the mean of its divisors is an integer number (47437632).

Almost surely, 2^221375602 is an apocalyptic number.

221375602 is a deficient number, since it is larger than the sum of its proper divisors (158125454).

221375602 is a wasteful number, since it uses less digits than its factorization.

221375602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15812552.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 221375602 is about 14878.6962466474. The cubic root of 221375602 is about 604.9366798471.

It can be divided in two parts, 2213 and 75602, that added together give a triangular number (77815 = T₃₉₄).

The spelling of 221375602 in words is "two hundred twenty-one million, three hundred seventy-five thousand, six hundred two".