21122322203 has 8 divisors (see below), whose sum is σ = 21551376000. Its totient is φ = 20697580800.

The previous prime is 21122322187. The next prime is 21122322209. The reversal of 21122322203 is 30222322112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21122322203 - 2⁴ = 21122322187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122322209) 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, 1068203 + ... + 1087796.

It is an arithmetic number, because the mean of its divisors is an integer number (2693922000).

Almost surely, 2^21122322203 is an apocalyptic number.

21122322203 is a deficient number, since it is larger than the sum of its proper divisors (429053797).

21122322203 is a wasteful number, since it uses less digits than its factorization.

21122322203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156197.

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

Adding to 21122322203 its reverse (30222322112), we get a palindrome (51344644315).

Subtracting 21122322203 from its reverse (30222322112), we obtain a palindrome (9099999909).

The spelling of 21122322203 in words is "twenty-one billion, one hundred twenty-two million, three hundred twenty-two thousand, two hundred three".