20210102131013 has 2 divisors, whose sum is σ = 20210102131014. Its totient is φ = 20210102131012.

The previous prime is 20210102131003. The next prime is 20210102131027. The reversal of 20210102131013 is 31013120101202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18389499736804 + 1820602394209 = 4288298^2 + 1349297^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210102131013 - 2²² = 20210097936709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20210102130982 and 20210102131000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210102131003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105051065506 + 10105051065507.

It is an arithmetic number, because the mean of its divisors is an integer number (10105051065507).

Almost surely, 2^{20210102131013} is an apocalyptic number.

It is an amenable number.

20210102131013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210102131013 is an equidigital number, since it uses as much as digits as its factorization.

20210102131013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20210102131013 its reverse (31013120101202), we get a palindrome (51223222232215).

The spelling of 20210102131013 in words is "twenty trillion, two hundred ten billion, one hundred two million, one hundred thirty-one thousand, thirteen".