213022311329957 has 2 divisors, whose sum is σ = 213022311329958. Its totient is φ = 213022311329956.

The previous prime is 213022311329911. The next prime is 213022311330013. The reversal of 213022311329957 is 759923113220312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125629710073156 + 87392601256801 = 11208466^2 + 9348401^2 .

It is a cyclic number.

It is not a de Polignac number, because 213022311329957 - 2¹² = 213022311325861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213022311329257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106511155664978 + 106511155664979.

It is an arithmetic number, because the mean of its divisors is an integer number (106511155664979).

Almost surely, 2^{213022311329957} is an apocalyptic number.

It is an amenable number.

213022311329957 is a deficient number, since it is larger than the sum of its proper divisors (1).

213022311329957 is an equidigital number, since it uses as much as digits as its factorization.

213022311329957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 213022311329957 in words is "two hundred thirteen trillion, twenty-two billion, three hundred eleven million, three hundred twenty-nine thousand, nine hundred fifty-seven".