12233321231 has 4 divisors (see below), whose sum is σ = 12276856464. Its totient is φ = 12189786000.

The previous prime is 12233321131. The next prime is 12233321251. The reversal of 12233321231 is 13212333221.

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 12233321231 - 2²² = 12229126927 is a prime.

It is a super-2 number, since 2×12233321231² (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 = 12233321197 and 12233321206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12233321251) 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, 21767195 + ... + 21767756.

It is an arithmetic number, because the mean of its divisors is an integer number (3069214116).

Almost surely, 2^12233321231 is an apocalyptic number.

12233321231 is a deficient number, since it is larger than the sum of its proper divisors (43535233).

12233321231 is an equidigital number, since it uses as much as digits as its factorization.

12233321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43535232.

The product of its digits is 1296, while the sum is 23.

Adding to 12233321231 its reverse (13212333221), we get a palindrome (25445654452).

The spelling of 12233321231 in words is "twelve billion, two hundred thirty-three million, three hundred twenty-one thousand, two hundred thirty-one".