21300226403 has 4 divisors (see below), whose sum is σ = 21300994968. Its totient is φ = 21299457840.

The previous prime is 21300226373. The next prime is 21300226447. The reversal of 21300226403 is 30462200312.

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 21300226403 - 2²⁶ = 21233117539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300226903) 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, 341093 + ... + 398678.

It is an arithmetic number, because the mean of its divisors is an integer number (5325248742).

Almost surely, 2^21300226403 is an apocalyptic number.

21300226403 is a deficient number, since it is larger than the sum of its proper divisors (768565).

21300226403 is an equidigital number, since it uses as much as digits as its factorization.

21300226403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768564.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21300226403 its reverse (30462200312), we get a palindrome (51762426715).

The spelling of 21300226403 in words is "twenty-one billion, three hundred million, two hundred twenty-six thousand, four hundred three".