312223122321001 has 4 divisors (see below), whose sum is σ = 312364848661072. Its totient is φ = 312081395980932.

The previous prime is 312223122320987. The next prime is 312223122321017. The reversal of 312223122321001 is 100123221322213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312223122321001 is a prime.

It is a super-2 number, since 2×312223122321001² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312223122321041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70863166731 + ... + 70863171136.

It is an arithmetic number, because the mean of its divisors is an integer number (78091212165268).

Almost surely, 2^{312223122321001} is an apocalyptic number.

It is an amenable number.

312223122321001 is a deficient number, since it is larger than the sum of its proper divisors (141726340071).

312223122321001 is a wasteful number, since it uses less digits than its factorization.

312223122321001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141726340070.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 312223122321001 its reverse (100123221322213), we get a palindrome (412346343643214).

The spelling of 312223122321001 in words is "three hundred twelve trillion, two hundred twenty-three billion, one hundred twenty-two million, three hundred twenty-one thousand, one".