1121123231013 has 4 divisors (see below), whose sum is σ = 1494830974688. Its totient is φ = 747415487340.

The previous prime is 1121123231003. The next prime is 1121123231023. The reversal of 1121123231013 is 3101323211211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1121123231003) and next prime (1121123231023).

It is not a de Polignac number, because 1121123231013 - 2⁶ = 1121123230949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121123231003) 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, 186853871833 + ... + 186853871838.

It is an arithmetic number, because the mean of its divisors is an integer number (373707743672).

Almost surely, 2^{1121123231013} is an apocalyptic number.

It is an amenable number.

1121123231013 is a deficient number, since it is larger than the sum of its proper divisors (373707743675).

1121123231013 is an equidigital number, since it uses as much as digits as its factorization.

1121123231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373707743674.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1121123231013 its reverse (3101323211211), we get a palindrome (4222446442224).

The spelling of 1121123231013 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, two hundred thirty-one thousand, thirteen".