222915 has 32 divisors (see below), whose sum is σ = 446976. Its totient is φ = 92160.

The previous prime is 222913. The next prime is 222919. The reversal of 222915 is 519222.

222915 = 11² + 12² + ... + 87².

It is not a de Polignac number, because 222915 - 2¹ = 222913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a d-powerful number, because it can be written as 2¹⁵ + 2¹⁶ + 9⁵ + 2¹⁶ + 1 + 5² .

It is a junction number, because it is equal to n+sod(n) for n = 222891 and 222900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1059 + ... + 1251.

It is an arithmetic number, because the mean of its divisors is an integer number (13968).

2²²²⁹¹⁵ is an apocalyptic number.

222915 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222915 is a wasteful number, since it uses less digits than its factorization.

222915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219.

The product of its digits is 360, while the sum is 21.

The square root of 222915 is about 472.1387507926. The cubic root of 222915 is about 60.6335641708.

The spelling of 222915 in words is "two hundred twenty-two thousand, nine hundred fifteen".