12220302313 has 4 divisors (see below), whose sum is σ = 12222468180. Its totient is φ = 12218136448.

The previous prime is 12220302307. The next prime is 12220302359. The reversal of 12220302313 is 31320302221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2456490969 + 9763811344 = 49563^2 + 98812^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220302313 - 2¹⁷ = 12220171241 is a prime.

It is a super-2 number, since 2×12220302313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220302383) 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, 1074448 + ... + 1085761.

It is an arithmetic number, because the mean of its divisors is an integer number (3055617045).

Almost surely, 2^12220302313 is an apocalyptic number.

It is an amenable number.

12220302313 is a deficient number, since it is larger than the sum of its proper divisors (2165867).

12220302313 is an equidigital number, since it uses as much as digits as its factorization.

12220302313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165866.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12220302313 its reverse (31320302221), we get a palindrome (43540604534).

The spelling of 12220302313 in words is "twelve billion, two hundred twenty million, three hundred two thousand, three hundred thirteen".