312200030122121 has 2 divisors, whose sum is σ = 312200030122122. Its totient is φ = 312200030122120.

The previous prime is 312200030122091. The next prime is 312200030122133. The reversal of 312200030122121 is 121221030002213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300703726137721 + 11496303984400 = 17340811^2 + 3390620^2 .

It is a cyclic number.

It is not a de Polignac number, because 312200030122121 - 2¹⁴ = 312200030105737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312200030122093 and 312200030122102.

It is not a weakly prime, because it can be changed into another prime (312200030122921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156100015061060 + 156100015061061.

It is an arithmetic number, because the mean of its divisors is an integer number (156100015061061).

Almost surely, 2^{312200030122121} is an apocalyptic number.

It is an amenable number.

312200030122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

312200030122121 is an equidigital number, since it uses as much as digits as its factorization.

312200030122121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 312200030122121 its reverse (121221030002213), we get a palindrome (433421060124334).

The spelling of 312200030122121 in words is "three hundred twelve trillion, two hundred billion, thirty million, one hundred twenty-two thousand, one hundred twenty-one".