2101202812613 has 2 divisors, whose sum is σ = 2101202812614. Its totient is φ = 2101202812612.

The previous prime is 2101202812609. The next prime is 2101202812619. The reversal of 2101202812613 is 3162182021012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2037536420929 + 63666391684 = 1427423^2 + 252322^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101202812613 - 2² = 2101202812609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101202812619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050601406306 + 1050601406307.

It is an arithmetic number, because the mean of its divisors is an integer number (1050601406307).

Almost surely, 2^{2101202812613} is an apocalyptic number.

It is an amenable number.

2101202812613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101202812613 is an equidigital number, since it uses as much as digits as its factorization.

2101202812613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 2101202812613 its reverse (3162182021012), we get a palindrome (5263384833625).

The spelling of 2101202812613 in words is "two trillion, one hundred one billion, two hundred two million, eight hundred twelve thousand, six hundred thirteen".