1113021113 has 2 divisors, whose sum is σ = 1113021114. Its totient is φ = 1113021112.

The previous prime is 1113021103. The next prime is 1113021139. The reversal of 1113021113 is 3111203111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706071184 + 406949929 = 26572^2 + 20173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113021113 - 2¹⁰ = 1113020089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113021103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556510556 + 556510557.

It is an arithmetic number, because the mean of its divisors is an integer number (556510557).

Almost surely, 2^1113021113 is an apocalyptic number.

It is an amenable number.

1113021113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113021113 is an equidigital number, since it uses as much as digits as its factorization.

1113021113 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 14.

The square root of 1113021113 is about 33361.9710598759. The cubic root of 1113021113 is about 1036.3373109057.

Adding to 1113021113 its reverse (3111203111), we get a palindrome (4224224224).

The spelling of 1113021113 in words is "one billion, one hundred thirteen million, twenty-one thousand, one hundred thirteen".