222321131 has 4 divisors (see below), whose sum is σ = 222551064. Its totient is φ = 222091200.

The previous prime is 222321107. The next prime is 222321133. The reversal of 222321131 is 131123222.

222321131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131123222 = 2 ⋅65561611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222321131 is a prime.

It is a super-2 number, since 2×222321131² = 98853370578238322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222321133) 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, 113510 + ... + 115451.

It is an arithmetic number, because the mean of its divisors is an integer number (55637766).

Almost surely, 2^222321131 is an apocalyptic number.

222321131 is a deficient number, since it is larger than the sum of its proper divisors (229933).

222321131 is an equidigital number, since it uses as much as digits as its factorization.

222321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229932.

The product of its digits is 144, while the sum is 17.

The square root of 222321131 is about 14910.4369821947. The cubic root of 222321131 is about 605.7967155365.

Adding to 222321131 its reverse (131123222), we get a palindrome (353444353).

The spelling of 222321131 in words is "two hundred twenty-two million, three hundred twenty-one thousand, one hundred thirty-one".