12312233452 has 12 divisors (see below), whose sum is σ = 21575104096. Its totient is φ = 6147918000.

The previous prime is 12312233443. The next prime is 12312233467. The reversal of 12312233452 is 25433221321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12312233452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2046303 + ... + 2052310.

Almost surely, 2^12312233452 is an apocalyptic number.

It is an amenable number.

12312233452 is a deficient number, since it is larger than the sum of its proper divisors (9262870644).

12312233452 is a wasteful number, since it uses less digits than its factorization.

12312233452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4099368 (or 4099366 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

Adding to 12312233452 its reverse (25433221321), we get a palindrome (37745454773).

The spelling of 12312233452 in words is "twelve billion, three hundred twelve million, two hundred thirty-three thousand, four hundred fifty-two".