12212201231 has 2 divisors, whose sum is σ = 12212201232. Its totient is φ = 12212201230.

The previous prime is 12212201219. The next prime is 12212201249. The reversal of 12212201231 is 13210221221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12212201231 - 2¹⁰ = 12212200207 is a prime.

It is a super-2 number, since 2×12212201231² (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 (12212201251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106100615 + 6106100616.

It is an arithmetic number, because the mean of its divisors is an integer number (6106100616).

Almost surely, 2^12212201231 is an apocalyptic number.

12212201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212201231 is an equidigital number, since it uses as much as digits as its factorization.

12212201231 is an evil number, because the sum of its binary digits is even.

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

Adding to 12212201231 its reverse (13210221221), we get a palindrome (25422422452).

The spelling of 12212201231 in words is "twelve billion, two hundred twelve million, two hundred one thousand, two hundred thirty-one".