222271915 has 4 divisors (see below), whose sum is σ = 266726304. Its totient is φ = 177817528.

The previous prime is 222271901. The next prime is 222271927. The reversal of 222271915 is 519172222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519172222 = 2 ⋅259586111.

It is a cyclic number.

It is not a de Polignac number, because 222271915 - 2¹¹ = 222269867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22227187 + ... + 22227196.

It is an arithmetic number, because the mean of its divisors is an integer number (66681576).

Almost surely, 2^222271915 is an apocalyptic number.

222271915 is a deficient number, since it is larger than the sum of its proper divisors (44454389).

222271915 is an equidigital number, since it uses as much as digits as its factorization.

222271915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44454388.

The product of its digits is 5040, while the sum is 31.

The square root of 222271915 is about 14908.7865032671. The cubic root of 222271915 is about 605.7520097973.

It can be divided in two parts, 22227 and 1915, that added together give a palindrome (24142).

The spelling of 222271915 in words is "two hundred twenty-two million, two hundred seventy-one thousand, nine hundred fifteen".