222215156 has 12 divisors (see below), whose sum is σ = 388983168. Its totient is φ = 111077112.

The previous prime is 222215113. The next prime is 222215159. The reversal of 222215156 is 651512222.

It is a super-2 number, since 2×222215156² = 98759151112208672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222215159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19595 + ... + 28781.

It is an arithmetic number, because the mean of its divisors is an integer number (32415264).

Almost surely, 2^222215156 is an apocalyptic number.

It is an amenable number.

222215156 is a deficient number, since it is larger than the sum of its proper divisors (166768012).

222215156 is a wasteful number, since it uses less digits than its factorization.

222215156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15238 (or 15236 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 222215156 is about 14906.8828398160. The cubic root of 222215156 is about 605.7004441204.

Adding to 222215156 its reverse (651512222), we get a palindrome (873727378).

The spelling of 222215156 in words is "two hundred twenty-two million, two hundred fifteen thousand, one hundred fifty-six".