1213222331212 has 12 divisors (see below), whose sum is σ = 2123251910640. Its totient is φ = 606578928176.

The previous prime is 1213222331203. The next prime is 1213222331219. The reversal of 1213222331212 is 2121332223121.

It is not an unprimeable number, because it can be changed into a prime (1213222331219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7974583 + ... + 8125294.

It is an arithmetic number, because the mean of its divisors is an integer number (176937659220).

Almost surely, 2^{1213222331212} is an apocalyptic number.

It is an amenable number.

1213222331212 is a deficient number, since it is larger than the sum of its proper divisors (910029579428).

1213222331212 is a wasteful number, since it uses less digits than its factorization.

1213222331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16118720 (or 16118718 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 1213222331212 its reverse (2121332223121), we get a palindrome (3334554554333).

The spelling of 1213222331212 in words is "one trillion, two hundred thirteen billion, two hundred twenty-two million, three hundred thirty-one thousand, two hundred twelve".