201021013711613 has 2 divisors, whose sum is σ = 201021013711614. Its totient is φ = 201021013711612.

The previous prime is 201021013711597. The next prime is 201021013711657. The reversal of 201021013711613 is 316117310120102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176465639017369 + 24555374694244 = 13284037^2 + 4955338^2 .

It is a cyclic number.

It is not a de Polignac number, because 201021013711613 - 2⁴ = 201021013711597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201021013711013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510506855806 + 100510506855807.

It is an arithmetic number, because the mean of its divisors is an integer number (100510506855807).

Almost surely, 2^{201021013711613} is an apocalyptic number.

It is an amenable number.

201021013711613 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021013711613 is an equidigital number, since it uses as much as digits as its factorization.

201021013711613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

Adding to 201021013711613 its reverse (316117310120102), we get a palindrome (517138323831715).

The spelling of 201021013711613 in words is "two hundred one trillion, twenty-one billion, thirteen million, seven hundred eleven thousand, six hundred thirteen".