12223131212 has 6 divisors (see below), whose sum is σ = 21390479628. Its totient is φ = 6111565604.

The previous prime is 12223131181. The next prime is 12223131233. The reversal of 12223131212 is 21213132221.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527891398 + ... + 1527891405.

It is an arithmetic number, because the mean of its divisors is an integer number (3565079938).

Almost surely, 2^12223131212 is an apocalyptic number.

It is an amenable number.

12223131212 is a deficient number, since it is larger than the sum of its proper divisors (9167348416).

12223131212 is a wasteful number, since it uses less digits than its factorization.

12223131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055782807 (or 3055782805 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

Adding to 12223131212 its reverse (21213132221), we get a palindrome (33436263433).

The spelling of 12223131212 in words is "twelve billion, two hundred twenty-three million, one hundred thirty-one thousand, two hundred twelve".