312023022121 has 2 divisors, whose sum is σ = 312023022122. Its totient is φ = 312023022120.

The previous prime is 312023022109. The next prime is 312023022151. The reversal of 312023022121 is 121220320213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288595658521 + 23427363600 = 537211^2 + 153060^2 .

It is an emirp because it is prime and its reverse (121220320213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312023022121 - 2⁷ = 312023021993 is a prime.

It is not a weakly prime, because it can be changed into another prime (312023022151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156011511060 + 156011511061.

It is an arithmetic number, because the mean of its divisors is an integer number (156011511061).

Almost surely, 2^312023022121 is an apocalyptic number.

It is an amenable number.

312023022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

312023022121 is an equidigital number, since it uses as much as digits as its factorization.

312023022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 312023022121 its reverse (121220320213), we get a palindrome (433243342334).

The spelling of 312023022121 in words is "three hundred twelve billion, twenty-three million, twenty-two thousand, one hundred twenty-one".