321420020231401 has 16 divisors (see below), whose sum is σ = 395595721551744. Its totient is φ = 254309156072064.

The previous prime is 321420020231381. The next prime is 321420020231461. The reversal of 321420020231401 is 104132020024123.

It is a cyclic number.

It is not a de Polignac number, because 321420020231401 - 2¹³ = 321420020223209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321420020231461) 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, 11559306 + ... + 27864988.

It is an arithmetic number, because the mean of its divisors is an integer number (24724732596984).

Almost surely, 2^{321420020231401} is an apocalyptic number.

It is an amenable number.

321420020231401 is a deficient number, since it is larger than the sum of its proper divisors (74175701320343).

321420020231401 is a wasteful number, since it uses less digits than its factorization.

321420020231401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16522320.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 321420020231401 its reverse (104132020024123), we get a palindrome (425552040255524).

The spelling of 321420020231401 in words is "three hundred twenty-one trillion, four hundred twenty billion, twenty million, two hundred thirty-one thousand, four hundred one".