222911138 has 4 divisors (see below), whose sum is σ = 334366710. Its totient is φ = 111455568.

The previous prime is 222911107. The next prime is 222911149. The reversal of 222911138 is 831119222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 190909489 + 32001649 = 13817^2 + 5657^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222911138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55727783 + ... + 55727786.

Almost surely, 2^222911138 is an apocalyptic number.

222911138 is a deficient number, since it is larger than the sum of its proper divisors (111455572).

222911138 is a wasteful number, since it uses less digits than its factorization.

222911138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111455571.

The product of its digits is 1728, while the sum is 29.

The square root of 222911138 is about 14930.2089067769. The cubic root of 222911138 is about 606.3321401015.

The spelling of 222911138 in words is "two hundred twenty-two million, nine hundred eleven thousand, one hundred thirty-eight".