21802454103 has 8 divisors (see below), whose sum is σ = 29102864128. Its totient is φ = 14518506744.

The previous prime is 21802454099. The next prime is 21802454111. The reversal of 21802454103 is 30145420812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21802454103 - 2² = 21802454099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21802454123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4112575 + ... + 4117872.

It is an arithmetic number, because the mean of its divisors is an integer number (3637858016).

Almost surely, 2^21802454103 is an apocalyptic number.

21802454103 is a deficient number, since it is larger than the sum of its proper divisors (7300410025).

21802454103 is an equidigital number, since it uses as much as digits as its factorization.

21802454103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8231333.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 21802454103 its reverse (30145420812), we get a palindrome (51947874915).

The spelling of 21802454103 in words is "twenty-one billion, eight hundred two million, four hundred fifty-four thousand, one hundred three".