21200222203 has 4 divisors (see below), whose sum is σ = 21295290688. Its totient is φ = 21105153720.

The previous prime is 21200222171. The next prime is 21200222213. The reversal of 21200222203 is 30222200212.

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 21200222203 - 2⁵ = 21200222171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200222213) 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, 47533908 + ... + 47534353.

It is an arithmetic number, because the mean of its divisors is an integer number (5323822672).

Almost surely, 2^21200222203 is an apocalyptic number.

21200222203 is a deficient number, since it is larger than the sum of its proper divisors (95068485).

21200222203 is an equidigital number, since it uses as much as digits as its factorization.

21200222203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95068484.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 21200222203 its reverse (30222200212), we get a palindrome (51422422415).

The spelling of 21200222203 in words is "twenty-one billion, two hundred million, two hundred twenty-two thousand, two hundred three".