222131201231 has 2 divisors, whose sum is σ = 222131201232. Its totient is φ = 222131201230.

The previous prime is 222131201213. The next prime is 222131201263. The reversal of 222131201231 is 132102131222.

222131201231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (222131201213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222131201231 is a prime.

It is a super-2 number, since 2×222131201231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222131201531) 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, 111065600615 + 111065600616.

It is an arithmetic number, because the mean of its divisors is an integer number (111065600616).

Almost surely, 2^222131201231 is an apocalyptic number.

222131201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

222131201231 is an equidigital number, since it uses as much as digits as its factorization.

222131201231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 222131201231 its reverse (132102131222), we get a palindrome (354233332453).

The spelling of 222131201231 in words is "two hundred twenty-two billion, one hundred thirty-one million, two hundred one thousand, two hundred thirty-one".