321313032001021 has 16 divisors (see below), whose sum is σ = 328958990553600. Its totient is φ = 313674982690608.

The previous prime is 321313032000971. The next prime is 321313032001097. The reversal of 321313032001021 is 120100230313123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321313032001021 is a prime.

It is a super-2 number, since 2×321313032001021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321313032000983 and 321313032001001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321313062001021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1454722890 + ... + 1454943748.

It is an arithmetic number, because the mean of its divisors is an integer number (20559936909600).

Almost surely, 2^{321313032001021} is an apocalyptic number.

It is an amenable number.

321313032001021 is a deficient number, since it is larger than the sum of its proper divisors (7645958552579).

321313032001021 is a wasteful number, since it uses less digits than its factorization.

321313032001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238608.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 321313032001021 its reverse (120100230313123), we get a palindrome (441413262314144).

The spelling of 321313032001021 in words is "three hundred twenty-one trillion, three hundred thirteen billion, thirty-two million, one thousand, twenty-one".