222504131 has 4 divisors (see below), whose sum is σ = 225638064. Its totient is φ = 219370200.

The previous prime is 222504097. The next prime is 222504133. The reversal of 222504131 is 131405222.

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

It is a cyclic number.

It is not a de Polignac number, because 222504131 - 2⁶ = 222504067 is a prime.

It is a super-2 number, since 2×222504131² = 99016176624130322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222504133) 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, 1566860 + ... + 1567001.

It is an arithmetic number, because the mean of its divisors is an integer number (56409516).

Almost surely, 2^222504131 is an apocalyptic number.

222504131 is a deficient number, since it is larger than the sum of its proper divisors (3133933).

222504131 is an equidigital number, since it uses as much as digits as its factorization.

222504131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133932.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 222504131 is about 14916.5723609682. The cubic root of 222504131 is about 605.9628871679.

Adding to 222504131 its reverse (131405222), we get a palindrome (353909353).

The spelling of 222504131 in words is "two hundred twenty-two million, five hundred four thousand, one hundred thirty-one".