222131131 has 2 divisors, whose sum is σ = 222131132. Its totient is φ = 222131130.

The previous prime is 222131113. The next prime is 222131149. The reversal of 222131131 is 131131222.

Together with previous prime (222131113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (222131113) and next prime (222131149).

It is a cyclic number.

It is not a de Polignac number, because 222131131 - 2⁵ = 222131099 is a prime.

It is a super-2 number, since 2×222131131² = 98684478718678322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222131111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111065565 + 111065566.

It is an arithmetic number, because the mean of its divisors is an integer number (111065566).

Almost surely, 2^222131131 is an apocalyptic number.

222131131 is a deficient number, since it is larger than the sum of its proper divisors (1).

222131131 is an equidigital number, since it uses as much as digits as its factorization.

222131131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 16.

The square root of 222131131 is about 14904.0642443597. The cubic root of 222131131 is about 605.6240910986.

Adding to 222131131 its reverse (131131222), we get a palindrome (353262353).

Subtracting from 222131131 its reverse (131131222), we obtain a palindrome (90999909).

The spelling of 222131131 in words is "two hundred twenty-two million, one hundred thirty-one thousand, one hundred thirty-one".