12431222212 has 6 divisors (see below), whose sum is σ = 21754638878. Its totient is φ = 6215611104.

The previous prime is 12431222189. The next prime is 12431222267. The reversal of 12431222212 is 21222213421.

It can be written as a sum of positive squares in only one way, i.e., 11736688896 + 694533316 = 108336^2 + 26354^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1553902773 + ... + 1553902780.

Almost surely, 2^12431222212 is an apocalyptic number.

It is an amenable number.

12431222212 is a deficient number, since it is larger than the sum of its proper divisors (9323416666).

12431222212 is a wasteful number, since it uses less digits than its factorization.

12431222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107805557 (or 3107805555 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

Adding to 12431222212 its reverse (21222213421), we get a palindrome (33653435633).

The spelling of 12431222212 in words is "twelve billion, four hundred thirty-one million, two hundred twenty-two thousand, two hundred twelve".