321012332241421 has 4 divisors (see below), whose sum is σ = 321030177183100. Its totient is φ = 320994487299744.

The previous prime is 321012332241413. The next prime is 321012332241481. The reversal of 321012332241421 is 124142233210123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 262410030855625 + 58602301385796 = 16199075^2 + 7655214^2 .

It is a cyclic number.

It is not a de Polignac number, because 321012332241421 - 2³ = 321012332241413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321012332241481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8922443856 + ... + 8922479833.

It is an arithmetic number, because the mean of its divisors is an integer number (80257544295775).

Almost surely, 2^{321012332241421} is an apocalyptic number.

It is an amenable number.

321012332241421 is a deficient number, since it is larger than the sum of its proper divisors (17844941679).

321012332241421 is a wasteful number, since it uses less digits than its factorization.

321012332241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17844941678.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 321012332241421 its reverse (124142233210123), we get a palindrome (445154565451544).

The spelling of 321012332241421 in words is "three hundred twenty-one trillion, twelve billion, three hundred thirty-two million, two hundred forty-one thousand, four hundred twenty-one".