221475002 has 12 divisors (see below), whose sum is σ = 386451450. Its totient is φ = 94917816.

The previous prime is 221474993. The next prime is 221475011. The reversal of 221475002 is 200574122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221474993) and next prime (221475011).

It can be written as a sum of positive squares in only one way, i.e., 220849321 + 625681 = 14861^2 + 791^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1129877 + ... + 1130072.

Almost surely, 2^221475002 is an apocalyptic number.

221475002 is a deficient number, since it is larger than the sum of its proper divisors (164976448).

221475002 is a wasteful number, since it uses less digits than its factorization.

221475002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259965 (or 2259958 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 221475002 is about 14882.0362182062. The cubic root of 221475002 is about 605.0272073005.

The spelling of 221475002 in words is "two hundred twenty-one million, four hundred seventy-five thousand, two".