222312242 has 4 divisors (see below), whose sum is σ = 333468366. Its totient is φ = 111156120.

The previous prime is 222312221. The next prime is 222312257. The reversal of 222312242 is 242213222.

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., 211149961 + 11162281 = 14531^2 + 3341^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55578059 + ... + 55578062.

Almost surely, 2^222312242 is an apocalyptic number.

222312242 is a deficient number, since it is larger than the sum of its proper divisors (111156124).

222312242 is a wasteful number, since it uses less digits than its factorization.

222312242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111156123.

The product of its digits is 768, while the sum is 20.

The square root of 222312242 is about 14910.1388994201. The cubic root of 222312242 is about 605.7886416320.

Adding to 222312242 its reverse (242213222), we get a palindrome (464525464).

The spelling of 222312242 in words is "two hundred twenty-two million, three hundred twelve thousand, two hundred forty-two".