222312133 has 4 divisors (see below), whose sum is σ = 222737728. Its totient is φ = 221886540.

The previous prime is 222312071. The next prime is 222312151. The reversal of 222312133 is 331213222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222312133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222312133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222312163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212013 + ... + 213058.

It is an arithmetic number, because the mean of its divisors is an integer number (55684432).

Almost surely, 2^222312133 is an apocalyptic number.

It is an amenable number.

222312133 is a deficient number, since it is larger than the sum of its proper divisors (425595).

222312133 is an equidigital number, since it uses as much as digits as its factorization.

222312133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425594.

The product of its digits is 432, while the sum is 19.

The square root of 222312133 is about 14910.1352441888. The cubic root of 222312133 is about 605.7885426256.

Adding to 222312133 its reverse (331213222), we get a palindrome (553525355).

The spelling of 222312133 in words is "two hundred twenty-two million, three hundred twelve thousand, one hundred thirty-three".