312132330121 has 2 divisors, whose sum is σ = 312132330122. Its totient is φ = 312132330120.

The previous prime is 312132330119. The next prime is 312132330127. The reversal of 312132330121 is 121033231213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292156465225 + 19975864896 = 540515^2 + 141336^2 .

It is a cyclic number.

It is not a de Polignac number, because 312132330121 - 2¹ = 312132330119 is a prime.

Together with 312132330119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 312132330092 and 312132330101.

It is not a weakly prime, because it can be changed into another prime (312132330127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156066165060 + 156066165061.

It is an arithmetic number, because the mean of its divisors is an integer number (156066165061).

Almost surely, 2^312132330121 is an apocalyptic number.

It is an amenable number.

312132330121 is a deficient number, since it is larger than the sum of its proper divisors (1).

312132330121 is an equidigital number, since it uses as much as digits as its factorization.

312132330121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 312132330121 its reverse (121033231213), we get a palindrome (433165561334).

The spelling of 312132330121 in words is "three hundred twelve billion, one hundred thirty-two million, three hundred thirty thousand, one hundred twenty-one".