312122222311 has 4 divisors (see below), whose sum is σ = 313706599272. Its totient is φ = 310537845352.

The previous prime is 312122222303. The next prime is 312122222317. The reversal of 312122222311 is 113222221213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312122222311 - 2³ = 312122222303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312122222317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792188185 + ... + 792188578.

It is an arithmetic number, because the mean of its divisors is an integer number (78426649818).

Almost surely, 2^312122222311 is an apocalyptic number.

312122222311 is a deficient number, since it is larger than the sum of its proper divisors (1584376961).

312122222311 is a wasteful number, since it uses less digits than its factorization.

312122222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584376960.

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

Adding to 312122222311 its reverse (113222221213), we get a palindrome (425344443524).

The spelling of 312122222311 in words is "three hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, three hundred eleven".