321111400434421 has 8 divisors (see below), whose sum is σ = 329474418356864. Its totient is φ = 312789078463680.

The previous prime is 321111400434353. The next prime is 321111400434443. The reversal of 321111400434421 is 124434004111123.

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 321111400434421 - 2¹¹ = 321111400432373 is a prime.

It is a super-2 number, since 2×321111400434421² (a number of 30 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 (321111400434221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10173971940 + ... + 10174003501.

It is an arithmetic number, because the mean of its divisors is an integer number (41184302294608).

Almost surely, 2^{321111400434421} is an apocalyptic number.

It is an amenable number.

321111400434421 is a deficient number, since it is larger than the sum of its proper divisors (8363017922443).

321111400434421 is a wasteful number, since it uses less digits than its factorization.

321111400434421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20347975851.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 321111400434421 its reverse (124434004111123), we get a palindrome (445545404545544).

The spelling of 321111400434421 in words is "three hundred twenty-one trillion, one hundred eleven billion, four hundred million, four hundred thirty-four thousand, four hundred twenty-one".