222660215 has 4 divisors (see below), whose sum is σ = 267192264. Its totient is φ = 178128168.

The previous prime is 222660211. The next prime is 222660223. The reversal of 222660215 is 512066222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222660215 - 2² = 222660211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222660211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22266017 + ... + 22266026.

It is an arithmetic number, because the mean of its divisors is an integer number (66798066).

Almost surely, 2^222660215 is an apocalyptic number.

222660215 is a deficient number, since it is larger than the sum of its proper divisors (44532049).

222660215 is an equidigital number, since it uses as much as digits as its factorization.

222660215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44532048.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 222660215 is about 14921.8033427599. The cubic root of 222660215 is about 606.1045459671.

The spelling of 222660215 in words is "two hundred twenty-two million, six hundred sixty thousand, two hundred fifteen".