321220222001 has 8 divisors (see below), whose sum is σ = 376062699264. Its totient is φ = 268616213280.

The previous prime is 321220221989. The next prime is 321220222013. The reversal of 321220222001 is 100222022123.

It is an interprime number because it is at equal distance from previous prime (321220221989) and next prime (321220222013).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321220222001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321220222201) 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 7 ways as a sum of consecutive naturals, for example, 559616825 + ... + 559617398.

It is an arithmetic number, because the mean of its divisors is an integer number (47007837408).

Almost surely, 2^321220222001 is an apocalyptic number.

It is an amenable number.

321220222001 is a deficient number, since it is larger than the sum of its proper divisors (54842477263).

321220222001 is a wasteful number, since it uses less digits than its factorization.

321220222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119234271.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 321220222001 its reverse (100222022123), we get a palindrome (421442244124).

The spelling of 321220222001 in words is "three hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, one".