321021332111423 has 4 divisors (see below), whose sum is σ = 321026243989320. Its totient is φ = 321016420233528.

The previous prime is 321021332111411. The next prime is 321021332111479. The reversal of 321021332111423 is 324111233120123.

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

It is a cyclic number.

It is not a de Polignac number, because 321021332111423 - 2³⁸ = 320746454204479 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 (321021331111423) 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, 2455840913 + ... + 2455971626.

It is an arithmetic number, because the mean of its divisors is an integer number (80256560997330).

Almost surely, 2^{321021332111423} is an apocalyptic number.

321021332111423 is a deficient number, since it is larger than the sum of its proper divisors (4911877897).

321021332111423 is an equidigital number, since it uses as much as digits as its factorization.

321021332111423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911877896.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 321021332111423 its reverse (324111233120123), we get a palindrome (645132565231546).

The spelling of 321021332111423 in words is "three hundred twenty-one trillion, twenty-one billion, three hundred thirty-two million, one hundred eleven thousand, four hundred twenty-three".