321121001231 has 8 divisors (see below), whose sum is σ = 321544112400. Its totient is φ = 320697975808.

The previous prime is 321121001207. The next prime is 321121001239. The reversal of 321121001231 is 132100121123.

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-321121001231 is a prime.

It is a super-2 number, since 2×321121001231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321121001239) 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, 11313245 + ... + 11341593.

It is an arithmetic number, because the mean of its divisors is an integer number (40193014050).

Almost surely, 2^321121001231 is an apocalyptic number.

321121001231 is a deficient number, since it is larger than the sum of its proper divisors (423111169).

321121001231 is a wasteful number, since it uses less digits than its factorization.

321121001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42873.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 321121001231 its reverse (132100121123), we get a palindrome (453221122354).

The spelling of 321121001231 in words is "three hundred twenty-one billion, one hundred twenty-one million, one thousand, two hundred thirty-one".