222215775 has 24 divisors (see below), whose sum is σ = 367900560. Its totient is φ = 118352640.

The previous prime is 222215767. The next prime is 222215783. The reversal of 222215775 is 577512222.

It is an interprime number because it is at equal distance from previous prime (222215767) and next prime (222215783).

It is not a de Polignac number, because 222215775 - 2³ = 222215767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69921 + ... + 73029.

It is an arithmetic number, because the mean of its divisors is an integer number (15329190).

Almost surely, 2^222215775 is an apocalyptic number.

222215775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

222215775 is a deficient number, since it is larger than the sum of its proper divisors (145684785).

222215775 is a wasteful number, since it uses less digits than its factorization.

222215775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4075 (or 4070 counting only the distinct ones).

The product of its digits is 19600, while the sum is 33.

The square root of 222215775 is about 14906.9036020228. The cubic root of 222215775 is about 605.7010065306.

Adding to 222215775 its reverse (577512222), we get a palindrome (799727997).

The spelling of 222215775 in words is "two hundred twenty-two million, two hundred fifteen thousand, seven hundred seventy-five".