21821314603 has 12 divisors (see below), whose sum is σ = 24000606504. Its totient is φ = 19824992000.

The previous prime is 21821314591. The next prime is 21821314633. The reversal of 21821314603 is 30641312812.

It is not a de Polignac number, because 21821314603 - 2⁹ = 21821314091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21821314633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137400 + ... + 250042.

It is an arithmetic number, because the mean of its divisors is an integer number (2000050542).

Almost surely, 2^21821314603 is an apocalyptic number.

21821314603 is a deficient number, since it is larger than the sum of its proper divisors (2179291901).

21821314603 is a wasteful number, since it uses less digits than its factorization.

21821314603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114266 (or 114255 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 21821314603 in words is "twenty-one billion, eight hundred twenty-one million, three hundred fourteen thousand, six hundred three".