12232213331 has 4 divisors (see below), whose sum is σ = 13173152832. Its totient is φ = 11291273832.

The previous prime is 12232213327. The next prime is 12232213339. The reversal of 12232213331 is 13331223221.

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 12232213331 - 2² = 12232213327 is a prime.

It is a super-2 number, since 2×12232213331² (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 = 12232213297 and 12232213306.

It is not an unprimeable number, because it can be changed into a prime (12232213339) 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, 470469731 + ... + 470469756.

It is an arithmetic number, because the mean of its divisors is an integer number (3293288208).

Almost surely, 2^12232213331 is an apocalyptic number.

12232213331 is a deficient number, since it is larger than the sum of its proper divisors (940939501).

12232213331 is an equidigital number, since it uses as much as digits as its factorization.

12232213331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940939500.

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

Adding to 12232213331 its reverse (13331223221), we get a palindrome (25563436552).

The spelling of 12232213331 in words is "twelve billion, two hundred thirty-two million, two hundred thirteen thousand, three hundred thirty-one".