313022201021 has 2 divisors, whose sum is σ = 313022201022. Its totient is φ = 313022201020.

The previous prime is 313022200969. The next prime is 313022201027. The reversal of 313022201021 is 120102220313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311376276121 + 1645924900 = 558011^2 + 40570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313022201021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313022201027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156511100510 + 156511100511.

It is an arithmetic number, because the mean of its divisors is an integer number (156511100511).

Almost surely, 2^313022201021 is an apocalyptic number.

It is an amenable number.

313022201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

313022201021 is an equidigital number, since it uses as much as digits as its factorization.

313022201021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 313022201021 its reverse (120102220313), we get a palindrome (433124421334).

The spelling of 313022201021 in words is "three hundred thirteen billion, twenty-two million, two hundred one thousand, twenty-one".