1121232331021 has 24 divisors (see below), whose sum is σ = 1258965146880. Its totient is φ = 997365710880.

The previous prime is 1121232330979. The next prime is 1121232331033. The reversal of 1121232331021 is 1201332321211.

It is not a de Polignac number, because 1121232331021 - 2⁷ = 1121232330893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121232330983 and 1121232331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121232331091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24983320 + ... + 25028158.

It is an arithmetic number, because the mean of its divisors is an integer number (52456881120).

Almost surely, 2^{1121232331021} is an apocalyptic number.

1121232331021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121232331021 is a deficient number, since it is larger than the sum of its proper divisors (137732815859).

1121232331021 is a wasteful number, since it uses less digits than its factorization.

1121232331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49305 (or 49294 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1121232331021 its reverse (1201332321211), we get a palindrome (2322564652232).

The spelling of 1121232331021 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-two million, three hundred thirty-one thousand, twenty-one".