1113310021 has 2 divisors, whose sum is σ = 1113310022. Its totient is φ = 1113310020.

The previous prime is 1113309979. The next prime is 1113310027. The reversal of 1113310021 is 1200133111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 731107521 + 382202500 = 27039^2 + 19550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113310021 - 2⁷ = 1113309893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113309983 and 1113310010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113310027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556655010 + 556655011.

It is an arithmetic number, because the mean of its divisors is an integer number (556655011).

Almost surely, 2^1113310021 is an apocalyptic number.

It is an amenable number.

1113310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113310021 is an equidigital number, since it uses as much as digits as its factorization.

1113310021 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.

The square root of 1113310021 is about 33366.3006789785. The cubic root of 1113310021 is about 1036.4269708515.

Adding to 1113310021 its reverse (1200133111), we get a palindrome (2313443132).

The spelling of 1113310021 in words is "one billion, one hundred thirteen million, three hundred ten thousand, twenty-one".