21304301112403 has 4 divisors (see below), whose sum is σ = 21422004433648. Its totient is φ = 21186597791160.

The previous prime is 21304301112379. The next prime is 21304301112433. The reversal of 21304301112403 is 30421110340312.

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 21304301112403 - 2²⁵ = 21304267557971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21304301112433) 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, 58851660351 + ... + 58851660712.

It is an arithmetic number, because the mean of its divisors is an integer number (5355501108412).

Almost surely, 2^{21304301112403} is an apocalyptic number.

21304301112403 is a deficient number, since it is larger than the sum of its proper divisors (117703321245).

21304301112403 is a wasteful number, since it uses less digits than its factorization.

21304301112403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117703321244.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21304301112403 its reverse (30421110340312), we get a palindrome (51725411452715).

The spelling of 21304301112403 in words is "twenty-one trillion, three hundred four billion, three hundred one million, one hundred twelve thousand, four hundred three".