222215139 has 48 divisors (see below), whose sum is σ = 342856800. Its totient is φ = 138475008.

The previous prime is 222215113. The next prime is 222215159. The reversal of 222215139 is 931512222.

It is a happy number.

It is not a de Polignac number, because 222215139 - 2⁹ = 222214627 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 2038617 + ... + 2038725.

It is an arithmetic number, because the mean of its divisors is an integer number (7142850).

Almost surely, 2^222215139 is an apocalyptic number.

222215139 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

222215139 is a deficient number, since it is larger than the sum of its proper divisors (120641661).

222215139 is a wasteful number, since it uses less digits than its factorization.

222215139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 321 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 222215139 is about 14906.8822696096. The cubic root of 222215139 is about 605.7004286745.

The spelling of 222215139 in words is "two hundred twenty-two million, two hundred fifteen thousand, one hundred thirty-nine".