12021223313 has 32 divisors (see below), whose sum is σ = 13446687744. Its totient is φ = 10744800000.

The previous prime is 12021223271. The next prime is 12021223339. The reversal of 12021223313 is 31332212021.

It is not a de Polignac number, because 12021223313 - 2²⁰ = 12020174737 is a prime.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021223363) 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, 29977913 + ... + 29978313.

It is an arithmetic number, because the mean of its divisors is an integer number (420208992).

Almost surely, 2^12021223313 is an apocalyptic number.

It is an amenable number.

12021223313 is a deficient number, since it is larger than the sum of its proper divisors (1425464431).

12021223313 is a wasteful number, since it uses less digits than its factorization.

12021223313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12021223313 its reverse (31332212021), we get a palindrome (43353435334).

The spelling of 12021223313 in words is "twelve billion, twenty-one million, two hundred twenty-three thousand, three hundred thirteen".