1121311013 has 16 divisors (see below), whose sum is σ = 1208486400. Its totient is φ = 1038018240.

The previous prime is 1121311003. The next prime is 1121311021. The reversal of 1121311013 is 3101131211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1121311013 - 2⁴ = 1121310997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121311003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92270 + ... + 103712.

It is an arithmetic number, because the mean of its divisors is an integer number (75530400).

Almost surely, 2^1121311013 is an apocalyptic number.

It is an amenable number.

1121311013 is a deficient number, since it is larger than the sum of its proper divisors (87175387).

1121311013 is a wasteful number, since it uses less digits than its factorization.

1121311013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11612.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1121311013 is about 33485.9823358969. The cubic root of 1121311013 is about 1038.9038663736.

Adding to 1121311013 its reverse (3101131211), we get a palindrome (4222442224).

The spelling of 1121311013 in words is "one billion, one hundred twenty-one million, three hundred eleven thousand, thirteen".