12033123231 has 4 divisors (see below), whose sum is σ = 16044164312. Its totient is φ = 8022082152.

The previous prime is 12033123211. The next prime is 12033123247. The reversal of 12033123231 is 13232133021.

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

It is not a de Polignac number, because 12033123231 - 2⁵ = 12033123199 is a prime.

It is a super-2 number, since 2×12033123231² (a number of 21 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 = 12033123198 and 12033123207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12033123211) 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, 2005520536 + ... + 2005520541.

It is an arithmetic number, because the mean of its divisors is an integer number (4011041078).

Almost surely, 2^12033123231 is an apocalyptic number.

12033123231 is a deficient number, since it is larger than the sum of its proper divisors (4011041081).

12033123231 is an equidigital number, since it uses as much as digits as its factorization.

12033123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011041080.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12033123231 its reverse (13232133021), we get a palindrome (25265256252).

The spelling of 12033123231 in words is "twelve billion, thirty-three million, one hundred twenty-three thousand, two hundred thirty-one".