21130110301313 has 4 divisors (see below), whose sum is σ = 22755503401428. Its totient is φ = 19504717201200.

The previous prime is 21130110301259. The next prime is 21130110301319. The reversal of 21130110301313 is 31310301103112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12936049475584 + 8194060825729 = 3596672^2 + 2862527^2 .

It is a cyclic number.

It is not a de Polignac number, because 21130110301313 - 2²⁶ = 21130043192449 is a prime.

It is a super-2 number, since 2×21130110301313² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130110301319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812696550038 + ... + 812696550063.

It is an arithmetic number, because the mean of its divisors is an integer number (5688875850357).

Almost surely, 2^{21130110301313} is an apocalyptic number.

It is an amenable number.

21130110301313 is a deficient number, since it is larger than the sum of its proper divisors (1625393100115).

21130110301313 is a wasteful number, since it uses less digits than its factorization.

21130110301313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625393100114.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 21130110301313 its reverse (31310301103112), we get a palindrome (52440411404425).

The spelling of 21130110301313 in words is "twenty-one trillion, one hundred thirty billion, one hundred ten million, three hundred one thousand, three hundred thirteen".