12220420313 has 2 divisors, whose sum is σ = 12220420314. Its totient is φ = 12220420312.

The previous prime is 12220420307. The next prime is 12220420337. The reversal of 12220420313 is 31302402221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8664444889 + 3555975424 = 93083^2 + 59632^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220420313 - 2⁴ = 12220420297 is a prime.

It is not a weakly prime, because it can be changed into another prime (12220420343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110210156 + 6110210157.

It is an arithmetic number, because the mean of its divisors is an integer number (6110210157).

Almost surely, 2^12220420313 is an apocalyptic number.

It is an amenable number.

12220420313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220420313 is an equidigital number, since it uses as much as digits as its factorization.

12220420313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12220420313 its reverse (31302402221), we get a palindrome (43522822534).

The spelling of 12220420313 in words is "twelve billion, two hundred twenty million, four hundred twenty thousand, three hundred thirteen".