1232231331021 has 4 divisors (see below), whose sum is σ = 1642975108032. Its totient is φ = 821487554012.

The previous prime is 1232231331013. The next prime is 1232231331091. The reversal of 1232231331021 is 1201331322321.

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 a cyclic number.

It is not a de Polignac number, because 1232231331021 - 2³ = 1232231331013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1232231330982 and 1232231331000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232231331011) 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, 205371888501 + ... + 205371888506.

It is an arithmetic number, because the mean of its divisors is an integer number (410743777008).

Almost surely, 2^{1232231331021} is an apocalyptic number.

It is an amenable number.

1232231331021 is a deficient number, since it is larger than the sum of its proper divisors (410743777011).

1232231331021 is an equidigital number, since it uses as much as digits as its factorization.

1232231331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410743777010.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1232231331021 its reverse (1201331322321), we get a palindrome (2433562653342).

The spelling of 1232231331021 in words is "one trillion, two hundred thirty-two billion, two hundred thirty-one million, three hundred thirty-one thousand, twenty-one".