1121313031123 has 16 divisors (see below), whose sum is σ = 1137653314560. Its totient is φ = 1105027934400.

The previous prime is 1121313030991. The next prime is 1121313031147. The reversal of 1121313031123 is 3211303131211.

It is a cyclic number.

It is not a de Polignac number, because 1121313031123 - 2⁹ = 1121313030611 is a prime.

It is a super-2 number, since 2×1121313031123² (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 = 1121313031094 and 1121313031103.

It is not an unprimeable number, because it can be changed into a prime (1121313031183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230199378 + ... + 230204248.

It is an arithmetic number, because the mean of its divisors is an integer number (71103332160).

Almost surely, 2^{1121313031123} is an apocalyptic number.

1121313031123 is a deficient number, since it is larger than the sum of its proper divisors (16340283437).

1121313031123 is an equidigital number, since it uses as much as digits as its factorization.

1121313031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9858.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1121313031123 its reverse (3211303131211), we get a palindrome (4332616162334).

The spelling of 1121313031123 in words is "one trillion, one hundred twenty-one billion, three hundred thirteen million, thirty-one thousand, one hundred twenty-three".