1121131202123 has 4 divisors (see below), whose sum is σ = 1121206113960. Its totient is φ = 1121056290288.

The previous prime is 1121131202117. The next prime is 1121131202141. The reversal of 1121131202123 is 3212021311211.

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 1121131202123 - 2²⁴ = 1121114424907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121131202095 and 1121131202104.

It is not an unprimeable number, because it can be changed into a prime (1121131202143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37433465 + ... + 37463402.

It is an arithmetic number, because the mean of its divisors is an integer number (280301528490).

Almost surely, 2^{1121131202123} is an apocalyptic number.

1121131202123 is a deficient number, since it is larger than the sum of its proper divisors (74911837).

1121131202123 is an equidigital number, since it uses as much as digits as its factorization.

1121131202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74911836.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1121131202123 its reverse (3212021311211), we get a palindrome (4333152513334).

The spelling of 1121131202123 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-one million, two hundred two thousand, one hundred twenty-three".