10101313021 has 2 divisors, whose sum is σ = 10101313022. Its totient is φ = 10101313020.

The previous prime is 10101313009. The next prime is 10101313067. The reversal of 10101313021 is 12031310101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7912102500 + 2189210521 = 88950^2 + 46789^2 .

It is an emirp because it is prime and its reverse (12031310101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10101313021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10101312992 and 10101313010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101313091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050656510 + 5050656511.

It is an arithmetic number, because the mean of its divisors is an integer number (5050656511).

Almost surely, 2^10101313021 is an apocalyptic number.

It is an amenable number.

10101313021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101313021 is an equidigital number, since it uses as much as digits as its factorization.

10101313021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 10101313021 its reverse (12031310101), we get a palindrome (22132623122).

The spelling of 10101313021 in words is "ten billion, one hundred one million, three hundred thirteen thousand, twenty-one".