12312120033 has 12 divisors (see below), whose sum is σ = 17806166820. Its totient is φ = 8197929216.

The previous prime is 12312119999. The next prime is 12312120089. The reversal of 12312120033 is 33002121321.

It can be written as a sum of positive squares in 2 ways, for example, as 7232992209 + 5079127824 = 85047^2 + 71268^2 .

It is not a de Polignac number, because 12312120033 - 2⁸ = 12312119777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12312119988 and 12312120015.

It is not an unprimeable number, because it can be changed into a prime (12312110033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 838216 + ... + 852777.

It is an arithmetic number, because the mean of its divisors is an integer number (1483847235).

Almost surely, 2^12312120033 is an apocalyptic number.

It is an amenable number.

12312120033 is a deficient number, since it is larger than the sum of its proper divisors (5494046787).

12312120033 is a wasteful number, since it uses less digits than its factorization.

12312120033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691808 (or 1691805 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12312120033 its reverse (33002121321), we get a palindrome (45314241354).

The spelling of 12312120033 in words is "twelve billion, three hundred twelve million, one hundred twenty thousand, thirty-three".