221345319 has 16 divisors (see below), whose sum is σ = 320751200. Its totient is φ = 134960256.

The previous prime is 221345317. The next prime is 221345323. The reversal of 221345319 is 913543122.

It is not a de Polignac number, because 221345319 - 2¹ = 221345317 is a prime.

It is a super-2 number, since 2×221345319² = 97987500486423522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221345317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21784 + ... + 30285.

It is an arithmetic number, because the mean of its divisors is an integer number (20046950).

Almost surely, 2^221345319 is an apocalyptic number.

221345319 is a deficient number, since it is larger than the sum of its proper divisors (99405881).

221345319 is a wasteful number, since it uses less digits than its factorization.

221345319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52194.

The product of its digits is 6480, while the sum is 30.

The square root of 221345319 is about 14877.6785487522. The cubic root of 221345319 is about 604.9090945536.

The spelling of 221345319 in words is "two hundred twenty-one million, three hundred forty-five thousand, three hundred nineteen".