12232222031 has 4 divisors (see below), whose sum is σ = 12284721072. Its totient is φ = 12179722992.

The previous prime is 12232222001. The next prime is 12232222049. The reversal of 12232222031 is 13022223221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13022223221 = 7 ⋅1860317603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12232222031 is a prime.

It is a super-2 number, since 2×12232222031² (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 = 12232221994 and 12232222012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232222001) 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, 26249171 + ... + 26249636.

It is an arithmetic number, because the mean of its divisors is an integer number (3071180268).

Almost surely, 2^12232222031 is an apocalyptic number.

12232222031 is a deficient number, since it is larger than the sum of its proper divisors (52499041).

12232222031 is an equidigital number, since it uses as much as digits as its factorization.

12232222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52499040.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12232222031 its reverse (13022223221), we get a palindrome (25254445252).

The spelling of 12232222031 in words is "twelve billion, two hundred thirty-two million, two hundred twenty-two thousand, thirty-one".