221271274 has 16 divisors (see below), whose sum is σ = 379555200. Its totient is φ = 94772304.

The previous prime is 221271263. The next prime is 221271313. The reversal of 221271274 is 472172122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25147 + ... + 32785.

It is an arithmetic number, because the mean of its divisors is an integer number (23722200).

Almost surely, 2^221271274 is an apocalyptic number.

221271274 is a deficient number, since it is larger than the sum of its proper divisors (158283926).

221271274 is a wasteful number, since it uses less digits than its factorization.

221271274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9717.

The product of its digits is 3136, while the sum is 28.

The square root of 221271274 is about 14875.1898811410. The cubic root of 221271274 is about 604.8416351204.

The spelling of 221271274 in words is "two hundred twenty-one million, two hundred seventy-one thousand, two hundred seventy-four".