213220020031013 has 2 divisors, whose sum is σ = 213220020031014. Its totient is φ = 213220020031012.

The previous prime is 213220020031001. The next prime is 213220020031019. The reversal of 213220020031013 is 310130020022312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121740704102689 + 91479315928324 = 11033617^2 + 9564482^2 .

It is a cyclic number.

It is not a de Polignac number, because 213220020031013 - 2⁴⁴ = 195627833986597 is a prime.

It is a super-2 number, since 2×213220020031013² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213220020031019) 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, 106610010015506 + 106610010015507.

It is an arithmetic number, because the mean of its divisors is an integer number (106610010015507).

Almost surely, 2^{213220020031013} is an apocalyptic number.

It is an amenable number.

213220020031013 is a deficient number, since it is larger than the sum of its proper divisors (1).

213220020031013 is an equidigital number, since it uses as much as digits as its factorization.

213220020031013 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 213220020031013 its reverse (310130020022312), we get a palindrome (523350040053325).

The spelling of 213220020031013 in words is "two hundred thirteen trillion, two hundred twenty billion, twenty million, thirty-one thousand, thirteen".