12220211231 has 2 divisors, whose sum is σ = 12220211232. Its totient is φ = 12220211230.

The previous prime is 12220211173. The next prime is 12220211239. The reversal of 12220211231 is 13211202221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12220211231 - 2¹⁰ = 12220210207 is a prime.

It is a super-2 number, since 2×12220211231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220211239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110105615 + 6110105616.

It is an arithmetic number, because the mean of its divisors is an integer number (6110105616).

Almost surely, 2^12220211231 is an apocalyptic number.

12220211231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220211231 is an equidigital number, since it uses as much as digits as its factorization.

12220211231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12220211231 its reverse (13211202221), we get a palindrome (25431413452).

The spelling of 12220211231 in words is "twelve billion, two hundred twenty million, two hundred eleven thousand, two hundred thirty-one".