221325472274 has 16 divisors (see below), whose sum is σ = 335201780088. Its totient is φ = 109593157632.

The previous prime is 221325472241. The next prime is 221325472307. The reversal of 221325472274 is 472274523122.

It is an interprime number because it is at equal distance from previous prime (221325472241) and next prime (221325472307).

It can be written as a sum of positive squares in 4 ways, for example, as 165514717225 + 55810755049 = 406835^2 + 236243^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127307 + ... + 677390.

Almost surely, 2^221325472274 is an apocalyptic number.

221325472274 is a deficient number, since it is larger than the sum of its proper divisors (113876307814).

221325472274 is a wasteful number, since it uses less digits than its factorization.

221325472274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806029.

The product of its digits is 376320, while the sum is 41.

Adding to 221325472274 its reverse (472274523122), we get a palindrome (693599995396).

The spelling of 221325472274 in words is "two hundred twenty-one billion, three hundred twenty-five million, four hundred seventy-two thousand, two hundred seventy-four".