21222133203 has 16 divisors (see below), whose sum is σ = 29371977216. Its totient is φ = 13620059040.

The previous prime is 21222133187. The next prime is 21222133237. The reversal of 21222133203 is 30233122212.

It is a happy number.

It is not a de Polignac number, because 21222133203 - 2⁴ = 21222133187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21222133203.

It is not an unprimeable number, because it can be changed into a prime (21222133003) 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 15 ways as a sum of consecutive naturals, for example, 1225101 + ... + 1242302.

It is an arithmetic number, because the mean of its divisors is an integer number (1835748576).

Almost surely, 2^21222133203 is an apocalyptic number.

21222133203 is a deficient number, since it is larger than the sum of its proper divisors (8149844013).

21222133203 is a wasteful number, since it uses less digits than its factorization.

21222133203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467514.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21222133203 its reverse (30233122212), we get a palindrome (51455255415).

The spelling of 21222133203 in words is "twenty-one billion, two hundred twenty-two million, one hundred thirty-three thousand, two hundred three".