21422031203 has 16 divisors (see below), whose sum is σ = 22699422720. Its totient is φ = 20173809216.

The previous prime is 21422031139. The next prime is 21422031217. The reversal of 21422031203 is 30213022412.

It is a cyclic number.

It is not a de Polignac number, because 21422031203 - 2⁶ = 21422031139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21422031223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4804151 + ... + 4808607.

It is an arithmetic number, because the mean of its divisors is an integer number (1418713920).

Almost surely, 2^21422031203 is an apocalyptic number.

21422031203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21422031203 is a deficient number, since it is larger than the sum of its proper divisors (1277391517).

21422031203 is a wasteful number, since it uses less digits than its factorization.

21422031203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7666.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21422031203 its reverse (30213022412), we get a palindrome (51635053615).

The spelling of 21422031203 in words is "twenty-one billion, four hundred twenty-two million, thirty-one thousand, two hundred three".