222222222212231 has 2 divisors, whose sum is σ = 222222222212232. Its totient is φ = 222222222212230.

The previous prime is 222222222212197. The next prime is 222222222212273. The reversal of 222222222212231 is 132212222222222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222222222212231 - 2¹⁰ = 222222222211207 is a prime.

It is a super-2 number, since 2×222222222212231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222222222212194 and 222222222212203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222222222212831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111111106115 + 111111111106116.

It is an arithmetic number, because the mean of its divisors is an integer number (111111111106116).

Almost surely, 2^{222222222212231} is an apocalyptic number.

222222222212231 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222222212231 is an equidigital number, since it uses as much as digits as its factorization.

222222222212231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12288, while the sum is 29.

Adding to 222222222212231 its reverse (132212222222222), we get a palindrome (354434444434453).

Subtracting from 222222222212231 its reverse (132212222222222), we obtain a palindrome (90009999990009).

The spelling of 222222222212231 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, two hundred thirty-one".