312221002001 has 8 divisors (see below), whose sum is σ = 314539330560. Its totient is φ = 309903704208.

The previous prime is 312221001959. The next prime is 312221002003. The reversal of 312221002001 is 100200122213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312221002001 - 2¹⁴ = 312220985617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312221002003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355760 + ... + 866606.

It is an arithmetic number, because the mean of its divisors is an integer number (39317416320).

Almost surely, 2^312221002001 is an apocalyptic number.

It is an amenable number.

312221002001 is a deficient number, since it is larger than the sum of its proper divisors (2318328559).

312221002001 is a wasteful number, since it uses less digits than its factorization.

312221002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515383.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 312221002001 its reverse (100200122213), we get a palindrome (412421124214).

The spelling of 312221002001 in words is "three hundred twelve billion, two hundred twenty-one million, two thousand, one".