12312120222331 has 8 divisors (see below), whose sum is σ = 12505488128784. Its totient is φ = 12119034813600.

The previous prime is 12312120222247. The next prime is 12312120222361. The reversal of 12312120222331 is 13322202121321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12312120222331 - 2⁷ = 12312120222203 is a prime.

It is a super-2 number, since 2×12312120222331² (a number of 27 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 = 12312120222296 and 12312120222305.

It is not an unprimeable number, because it can be changed into a prime (12312120222361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70536580 + ... + 70710913.

It is an arithmetic number, because the mean of its divisors is an integer number (1563186016098).

Almost surely, 2^{12312120222331} is an apocalyptic number.

12312120222331 is a deficient number, since it is larger than the sum of its proper divisors (193367906453).

12312120222331 is a wasteful number, since it uses less digits than its factorization.

12312120222331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141248861.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12312120222331 its reverse (13322202121321), we get a palindrome (25634322343652).

The spelling of 12312120222331 in words is "twelve trillion, three hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, three hundred thirty-one".