1213331313212 has 12 divisors (see below), whose sum is σ = 2172709561176. Its totient is φ = 592557152880.

The previous prime is 1213331313163. The next prime is 1213331313241. The reversal of 1213331313212 is 2123131333121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3527125739 + ... + 3527126082.

It is an arithmetic number, because the mean of its divisors is an integer number (181059130098).

Almost surely, 2^{1213331313212} is an apocalyptic number.

It is an amenable number.

1213331313212 is a deficient number, since it is larger than the sum of its proper divisors (959378247964).

1213331313212 is a wasteful number, since it uses less digits than its factorization.

1213331313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054251868 (or 7054251866 counting only the distinct ones).

The product of its digits is 1944, while the sum is 26.

Adding to 1213331313212 its reverse (2123131333121), we get a palindrome (3336462646333).

The spelling of 1213331313212 in words is "one trillion, two hundred thirteen billion, three hundred thirty-one million, three hundred thirteen thousand, two hundred twelve".