221013022313 has 2 divisors, whose sum is σ = 221013022314. Its totient is φ = 221013022312.

The previous prime is 221013022309. The next prime is 221013022421. The reversal of 221013022313 is 313220310122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160394643049 + 60618379264 = 400493^2 + 246208^2 .

It is a cyclic number.

It is not a de Polignac number, because 221013022313 - 2² = 221013022309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (221013022613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506511156 + 110506511157.

It is an arithmetic number, because the mean of its divisors is an integer number (110506511157).

Almost surely, 2^221013022313 is an apocalyptic number.

It is an amenable number.

221013022313 is a deficient number, since it is larger than the sum of its proper divisors (1).

221013022313 is an equidigital number, since it uses as much as digits as its factorization.

221013022313 is an odious number, because the sum of its binary digits is odd.

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

Adding to 221013022313 its reverse (313220310122), we get a palindrome (534233332435).

The spelling of 221013022313 in words is "two hundred twenty-one billion, thirteen million, twenty-two thousand, three hundred thirteen".