312121011271 has 2 divisors, whose sum is σ = 312121011272. Its totient is φ = 312121011270.

The previous prime is 312121011221. The next prime is 312121011277. The reversal of 312121011271 is 172110121213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312121011271 - 2⁹ = 312121010759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312121011277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156060505635 + 156060505636.

It is an arithmetic number, because the mean of its divisors is an integer number (156060505636).

Almost surely, 2^312121011271 is an apocalyptic number.

312121011271 is a deficient number, since it is larger than the sum of its proper divisors (1).

312121011271 is an equidigital number, since it uses as much as digits as its factorization.

312121011271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 312121011271 its reverse (172110121213), we get a palindrome (484231132484).

The spelling of 312121011271 in words is "three hundred twelve billion, one hundred twenty-one million, eleven thousand, two hundred seventy-one".