222242139 has 24 divisors (see below), whose sum is σ = 388458720. Its totient is φ = 119524608.

The previous prime is 222242113. The next prime is 222242147. The reversal of 222242139 is 931242222.

It is not a de Polignac number, because 222242139 - 2⁹ = 222241627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222242039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102684 + ... + 104825.

It is an arithmetic number, because the mean of its divisors is an integer number (16185780).

Almost surely, 2^222242139 is an apocalyptic number.

222242139 is a deficient number, since it is larger than the sum of its proper divisors (166216581).

222242139 is a wasteful number, since it uses less digits than its factorization.

222242139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207539 (or 207536 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 222242139 is about 14907.7878640662. The cubic root of 222242139 is about 605.7249593303.

The spelling of 222242139 in words is "two hundred twenty-two million, two hundred forty-two thousand, one hundred thirty-nine".