421130455321 has 4 divisors (see below), whose sum is σ = 421132188672. Its totient is φ = 421128721972.

The previous prime is 421130455313. The next prime is 421130455327. The reversal of 421130455321 is 123554031124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421130455321 - 2³ = 421130455313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421130455327) 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, 428341 + ... + 1012786.

It is an arithmetic number, because the mean of its divisors is an integer number (105283047168).

Almost surely, 2^421130455321 is an apocalyptic number.

It is an amenable number.

421130455321 is a deficient number, since it is larger than the sum of its proper divisors (1733351).

421130455321 is a wasteful number, since it uses less digits than its factorization.

421130455321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733350.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 421130455321 its reverse (123554031124), we get a palindrome (544684486445).

The spelling of 421130455321 in words is "four hundred twenty-one billion, one hundred thirty million, four hundred fifty-five thousand, three hundred twenty-one".