221590336313 has 2 divisors, whose sum is σ = 221590336314. Its totient is φ = 221590336312.

The previous prime is 221590336277. The next prime is 221590336337. The reversal of 221590336313 is 313633095122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211427075344 + 10163260969 = 459812^2 + 100813^2 .

It is a cyclic number.

It is not a de Polignac number, because 221590336313 - 2⁸ = 221590336057 is a prime.

It is not a weakly prime, because it can be changed into another prime (221590336613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110795168156 + 110795168157.

It is an arithmetic number, because the mean of its divisors is an integer number (110795168157).

Almost surely, 2^221590336313 is an apocalyptic number.

It is an amenable number.

221590336313 is a deficient number, since it is larger than the sum of its proper divisors (1).

221590336313 is an equidigital number, since it uses as much as digits as its factorization.

221590336313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 38.

The spelling of 221590336313 in words is "two hundred twenty-one billion, five hundred ninety million, three hundred thirty-six thousand, three hundred thirteen".