13113010021 has 4 divisors (see below), whose sum is σ = 13113478252. Its totient is φ = 13112541792.

The previous prime is 13113010019. The next prime is 13113010039. The reversal of 13113010021 is 12001031131.

13113010021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5272792996 + 7840217025 = 72614^2 + 88545^2 .

It is a cyclic number.

It is not a de Polignac number, because 13113010021 - 2¹ = 13113010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13113009983 and 13113010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113013021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189240 + ... + 249073.

It is an arithmetic number, because the mean of its divisors is an integer number (3278369563).

Almost surely, 2^13113010021 is an apocalyptic number.

It is an amenable number.

13113010021 is a deficient number, since it is larger than the sum of its proper divisors (468231).

13113010021 is an equidigital number, since it uses as much as digits as its factorization.

13113010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468230.

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

Adding to 13113010021 its reverse (12001031131), we get a palindrome (25114041152).

The spelling of 13113010021 in words is "thirteen billion, one hundred thirteen million, ten thousand, twenty-one".