221263190 has 8 divisors (see below), whose sum is σ = 398273760. Its totient is φ = 88505272.

The previous prime is 221263139. The next prime is 221263223. The reversal of 221263190 is 91362122.

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

It is a super-2 number, since 2×221263190² = 97914798497952200, which contains 22 as substring.

It is a congruent number.

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, 11063150 + ... + 11063169.

It is an arithmetic number, because the mean of its divisors is an integer number (49784220).

Almost surely, 2^221263190 is an apocalyptic number.

221263190 is a deficient number, since it is larger than the sum of its proper divisors (177010570).

221263190 is a wasteful number, since it uses less digits than its factorization.

221263190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22126326.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 221263190 is about 14874.9181510353. The cubic root of 221263190 is about 604.8342692006.

The spelling of 221263190 in words is "two hundred twenty-one million, two hundred sixty-three thousand, one hundred ninety".