312200030122921 has 2 divisors, whose sum is σ = 312200030122922. Its totient is φ = 312200030122920.

The previous prime is 312200030122837. The next prime is 312200030122943. The reversal of 312200030122921 is 129221030002213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290893866583321 + 21306163539600 = 17055611^2 + 4615860^2 .

It is a cyclic number.

It is not a de Polignac number, because 312200030122921 - 2⁷ = 312200030122793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312200030122921.

It is not a weakly prime, because it can be changed into another prime (312200030122121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156100015061460 + 156100015061461.

It is an arithmetic number, because the mean of its divisors is an integer number (156100015061461).

Almost surely, 2^{312200030122921} is an apocalyptic number.

It is an amenable number.

312200030122921 is a deficient number, since it is larger than the sum of its proper divisors (1).

312200030122921 is an equidigital number, since it uses as much as digits as its factorization.

312200030122921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 312200030122921 in words is "three hundred twelve trillion, two hundred billion, thirty million, one hundred twenty-two thousand, nine hundred twenty-one".