221263474 has 8 divisors (see below), whose sum is σ = 349363440. Its totient is φ = 104808996.

The previous prime is 221263459. The next prime is 221263501. The reversal of 221263474 is 474362122.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 2911324 + ... + 2911399.

It is an arithmetic number, because the mean of its divisors is an integer number (43670430).

Almost surely, 2^221263474 is an apocalyptic number.

221263474 is a deficient number, since it is larger than the sum of its proper divisors (128099966).

221263474 is a wasteful number, since it uses less digits than its factorization.

221263474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822744.

The product of its digits is 16128, while the sum is 31.

The square root of 221263474 is about 14874.9276973033. The cubic root of 221263474 is about 604.8345279767.

It can be divided in two parts, 22126 and 3474, that added together give a square (25600 = 160²).

The spelling of 221263474 in words is "two hundred twenty-one million, two hundred sixty-three thousand, four hundred seventy-four".