321420021041331 has 16 divisors (see below), whose sum is σ = 476406630661920. Its totient is φ = 214177044257280.

The previous prime is 321420021041311. The next prime is 321420021041347. The reversal of 321420021041331 is 133140120024123.

321420021041331 is a `hidden beast` number, since 3 + 2 + 1 + 4 + 2 + 0 + 0 + 210 + 413 + 31 = 666.

It is not a de Polignac number, because 321420021041331 - 2⁵ = 321420021041299 is a prime.

It is a super-2 number, since 2×321420021041331² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 321420021041295 and 321420021041304.

It is not an unprimeable number, because it can be changed into a prime (321420021041311) 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, 2860214170 + ... + 2860326543.

It is an arithmetic number, because the mean of its divisors is an integer number (29775414416370).

Almost surely, 2^{321420021041331} is an apocalyptic number.

321420021041331 is a deficient number, since it is larger than the sum of its proper divisors (154986609620589).

321420021041331 is a wasteful number, since it uses less digits than its factorization.

321420021041331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720542803 (or 5720542797 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 321420021041331 its reverse (133140120024123), we get a palindrome (454560141065454).

The spelling of 321420021041331 in words is "three hundred twenty-one trillion, four hundred twenty billion, twenty-one million, forty-one thousand, three hundred thirty-one".