222321220111231 has 2 divisors, whose sum is σ = 222321220111232. Its totient is φ = 222321220111230.

The previous prime is 222321220111169. The next prime is 222321220111261. The reversal of 222321220111231 is 132111022123222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222321220111231 - 2²⁷ = 222321085893503 is a prime.

It is a super-2 number, since 2×222321220111231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222321220111196 and 222321220111205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222321220111261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111160610055615 + 111160610055616.

It is an arithmetic number, because the mean of its divisors is an integer number (111160610055616).

Almost surely, 2^{222321220111231} is an apocalyptic number.

222321220111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

222321220111231 is an equidigital number, since it uses as much as digits as its factorization.

222321220111231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 222321220111231 its reverse (132111022123222), we get a palindrome (354432242234453).

The spelling of 222321220111231 in words is "two hundred twenty-two trillion, three hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, two hundred thirty-one".