321012001 has 8 divisors (see below), whose sum is σ = 329251104. Its totient is φ = 312792480.

The previous prime is 321011987. The next prime is 321012017. The reversal of 321012001 is 100210123.

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 321012001 - 2¹⁵ = 320979233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321012701) 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, 31770 + ... + 40636.

It is an arithmetic number, because the mean of its divisors is an integer number (41156388).

Almost surely, 2^321012001 is an apocalyptic number.

It is an amenable number.

321012001 is a deficient number, since it is larger than the sum of its proper divisors (8239103).

321012001 is an equidigital number, since it uses as much as digits as its factorization.

321012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9791.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 321012001 is about 17916.8077792893. The cubic root of 321012001 is about 684.7106604756.

Adding to 321012001 its reverse (100210123), we get a palindrome (421222124).

The spelling of 321012001 in words is "three hundred twenty-one million, twelve thousand, one".