312223321211 has 2 divisors, whose sum is σ = 312223321212. Its totient is φ = 312223321210.

The previous prime is 312223321159. The next prime is 312223321213. The reversal of 312223321211 is 112123322213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312223321211 - 2²² = 312219126907 is a prime.

Together with 312223321213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312223321213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156111660605 + 156111660606.

It is an arithmetic number, because the mean of its divisors is an integer number (156111660606).

Almost surely, 2^312223321211 is an apocalyptic number.

312223321211 is a deficient number, since it is larger than the sum of its proper divisors (1).

312223321211 is an equidigital number, since it uses as much as digits as its factorization.

312223321211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

Adding to 312223321211 its reverse (112123322213), we get a palindrome (424346643424).

The spelling of 312223321211 in words is "three hundred twelve billion, two hundred twenty-three million, three hundred twenty-one thousand, two hundred eleven".