12213131221013 has 32 divisors (see below), whose sum is σ = 13734971712000. Its totient is φ = 10802978887680.

The previous prime is 12213131220991. The next prime is 12213131221069. The reversal of 12213131221013 is 31012213131221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12213131221013 - 2²⁴ = 12213114443797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12213131221013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213131221813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8185328 + ... + 9561686.

It is an arithmetic number, because the mean of its divisors is an integer number (429217866000).

Almost surely, 2^{12213131221013} is an apocalyptic number.

It is an amenable number.

12213131221013 is a deficient number, since it is larger than the sum of its proper divisors (1521840490987).

12213131221013 is a wasteful number, since it uses less digits than its factorization.

12213131221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376885.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12213131221013 its reverse (31012213131221), we get a palindrome (43225344352234).

The spelling of 12213131221013 in words is "twelve trillion, two hundred thirteen billion, one hundred thirty-one million, two hundred twenty-one thousand, thirteen".