321420021041421 has 12 divisors (see below), whose sum is σ = 464273564374620. Its totient is φ = 214279921420800.

The previous prime is 321420021041417. The next prime is 321420021041453. The reversal of 321420021041421 is 124140120024123.

321420021041421 is a `hidden beast` number, since 3 + 2 + 1 + 4 + 20 + 0 + 210 + 4 + 1 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 42008403369321 + 279411617672100 = 6481389^2 + 16715610^2 .

It is not a de Polignac number, because 321420021041421 - 2² = 321420021041417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321420021041221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19209271 + ... + 31809371.

It is an arithmetic number, because the mean of its divisors is an integer number (38689463697885).

Almost surely, 2^{321420021041421} is an apocalyptic number.

It is an amenable number.

321420021041421 is a deficient number, since it is larger than the sum of its proper divisors (142853543333199).

321420021041421 is a wasteful number, since it uses less digits than its factorization.

321420021041421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15434476 (or 15434473 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 321420021041421 its reverse (124140120024123), we get a palindrome (445560141065544).

The spelling of 321420021041421 in words is "three hundred twenty-one trillion, four hundred twenty billion, twenty-one million, forty-one thousand, four hundred twenty-one".