10113310021 has 4 divisors (see below), whose sum is σ = 10169184844. Its totient is φ = 10057435200.

The previous prime is 10113310019. The next prime is 10113310027. The reversal of 10113310021 is 12001331101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12001331101 = 17 ⋅705960653.

It can be written as a sum of positive squares in 2 ways, for example, as 2818441921 + 7294868100 = 53089^2 + 85410^2 .

It is a cyclic number.

It is not a de Polignac number, because 10113310021 - 2¹ = 10113310019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10113309983 and 10113310010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10113310027) 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, 27937140 + ... + 27937501.

It is an arithmetic number, because the mean of its divisors is an integer number (2542296211).

Almost surely, 2^10113310021 is an apocalyptic number.

It is an amenable number.

10113310021 is a deficient number, since it is larger than the sum of its proper divisors (55874823).

10113310021 is an equidigital number, since it uses as much as digits as its factorization.

10113310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55874822.

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

Adding to 10113310021 its reverse (12001331101), we get a palindrome (22114641122).

The spelling of 10113310021 in words is "ten billion, one hundred thirteen million, three hundred ten thousand, twenty-one".