221356795 has 24 divisors (see below), whose sum is σ = 295323840. Its totient is φ = 159139200.

The previous prime is 221356763. The next prime is 221356799. The reversal of 221356795 is 597653122.

It is not a de Polignac number, because 221356795 - 2⁵ = 221356763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221356799) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51790 + ... + 55900.

It is an arithmetic number, because the mean of its divisors is an integer number (12305160).

Almost surely, 2^221356795 is an apocalyptic number.

221356795 is a deficient number, since it is larger than the sum of its proper divisors (73967045).

221356795 is a wasteful number, since it uses less digits than its factorization.

221356795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227 (or 4216 counting only the distinct ones).

The product of its digits is 113400, while the sum is 40.

The square root of 221356795 is about 14878.0642222031. The cubic root of 221356795 is about 604.9195485309.

The spelling of 221356795 in words is "two hundred twenty-one million, three hundred fifty-six thousand, seven hundred ninety-five".