12312120089 has 2 divisors, whose sum is σ = 12312120090. Its totient is φ = 12312120088.

The previous prime is 12312119999. The next prime is 12312120113. The reversal of 12312120089 is 98002121321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8736080089 + 3576040000 = 93467^2 + 59800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12312120089 is a prime.

It is not a weakly prime, because it can be changed into another prime (12314120089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156060044 + 6156060045.

It is an arithmetic number, because the mean of its divisors is an integer number (6156060045).

Almost surely, 2^12312120089 is an apocalyptic number.

It is an amenable number.

12312120089 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312120089 is an equidigital number, since it uses as much as digits as its factorization.

12312120089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 12312120089 in words is "twelve billion, three hundred twelve million, one hundred twenty thousand, eighty-nine".