312222213211 has 16 divisors (see below), whose sum is σ = 324373238784. Its totient is φ = 300321800064.

The previous prime is 312222213167. The next prime is 312222213241. The reversal of 312222213211 is 112312222213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312222213211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312222213241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1249026 + ... + 1478008.

It is an arithmetic number, because the mean of its divisors is an integer number (20273327424).

Almost surely, 2^312222213211 is an apocalyptic number.

312222213211 is a deficient number, since it is larger than the sum of its proper divisors (12151025573).

312222213211 is a wasteful number, since it uses less digits than its factorization.

312222213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229530.

The product of its digits is 576, while the sum is 22.

Adding to 312222213211 its reverse (112312222213), we get a palindrome (424534435424).

The spelling of 312222213211 in words is "three hundred twelve billion, two hundred twenty-two million, two hundred thirteen thousand, two hundred eleven".