12421211313 has 16 divisors (see below), whose sum is σ = 20040946560. Its totient is φ = 6680315136.

The previous prime is 12421211291. The next prime is 12421211329. The reversal of 12421211313 is 31311212421.

It is not a de Polignac number, because 12421211313 - 2²⁰ = 12420162737 is a prime.

It is a super-3 number, since 3×12421211313³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12421211313.

It is not an unprimeable number, because it can be changed into a prime (12421211333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17396298 + ... + 17397011.

It is an arithmetic number, because the mean of its divisors is an integer number (1252559160).

Almost surely, 2^12421211313 is an apocalyptic number.

It is an amenable number.

12421211313 is a deficient number, since it is larger than the sum of its proper divisors (7619735247).

12421211313 is a wasteful number, since it uses less digits than its factorization.

12421211313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34793336.

The product of its digits is 288, while the sum is 21.

Adding to 12421211313 its reverse (31311212421), we get a palindrome (43732423734).

The spelling of 12421211313 in words is "twelve billion, four hundred twenty-one million, two hundred eleven thousand, three hundred thirteen".