1130113021 has 2 divisors, whose sum is σ = 1130113022. Its totient is φ = 1130113020.

The previous prime is 1130113007. The next prime is 1130113043. The reversal of 1130113021 is 1203110311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1107891225 + 22221796 = 33285^2 + 4714^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130113021 - 2¹⁷ = 1129981949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1130112992 and 1130113010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130113001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565056510 + 565056511.

It is an arithmetic number, because the mean of its divisors is an integer number (565056511).

Almost surely, 2^1130113021 is an apocalyptic number.

It is an amenable number.

1130113021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130113021 is an equidigital number, since it uses as much as digits as its factorization.

1130113021 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 1130113021 is about 33617.1536718979. The cubic root of 1130113021 is about 1041.6151619491.

Adding to 1130113021 its reverse (1203110311), we get a palindrome (2333223332).

The spelling of 1130113021 in words is "one billion, one hundred thirty million, one hundred thirteen thousand, twenty-one".