222312442 has 16 divisors (see below), whose sum is σ = 364191552. Its totient is φ = 100937920.

The previous prime is 222312437. The next prime is 222312443. The reversal of 222312442 is 244213222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (222312443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16323 + ... + 26665.

It is an arithmetic number, because the mean of its divisors is an integer number (22761972).

Almost surely, 2^222312442 is an apocalyptic number.

222312442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

222312442 is a deficient number, since it is larger than the sum of its proper divisors (141879110).

222312442 is a wasteful number, since it uses less digits than its factorization.

222312442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11333.

The product of its digits is 1536, while the sum is 22.

The square root of 222312442 is about 14910.1456062642. The cubic root of 222312442 is about 605.7888232949.

Adding to 222312442 its reverse (244213222), we get a palindrome (466525664).

The spelling of 222312442 in words is "two hundred twenty-two million, three hundred twelve thousand, four hundred forty-two".