1121103231023 has 4 divisors (see below), whose sum is σ = 1122836003280. Its totient is φ = 1119370458768.

The previous prime is 1121103231019. The next prime is 1121103231037. The reversal of 1121103231023 is 3201323011211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121103231023 - 2² = 1121103231019 is a prime.

It is a super-2 number, since 2×1121103231023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121103230986 and 1121103231004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121103231323) 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, 866385158 + ... + 866386451.

It is an arithmetic number, because the mean of its divisors is an integer number (280709000820).

Almost surely, 2^{1121103231023} is an apocalyptic number.

1121103231023 is a deficient number, since it is larger than the sum of its proper divisors (1732772257).

1121103231023 is an equidigital number, since it uses as much as digits as its factorization.

1121103231023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732772256.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1121103231023 its reverse (3201323011211), we get a palindrome (4322426242234).

The spelling of 1121103231023 in words is "one trillion, one hundred twenty-one billion, one hundred three million, two hundred thirty-one thousand, twenty-three".