21222210303 has 32 divisors (see below), whose sum is σ = 37822937600. Its totient is φ = 11488713408.

The previous prime is 21222210259. The next prime is 21222210311. The reversal of 21222210303 is 30301222212.

It is not a de Polignac number, because 21222210303 - 2⁹ = 21222209791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222210803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2951326 + ... + 2958507.

It is an arithmetic number, because the mean of its divisors is an integer number (1181966800).

Almost surely, 2^21222210303 is an apocalyptic number.

21222210303 is a deficient number, since it is larger than the sum of its proper divisors (16600727297).

21222210303 is a wasteful number, since it uses less digits than its factorization.

21222210303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5909868 (or 5909862 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21222210303 its reverse (30301222212), we get a palindrome (51523432515).

The spelling of 21222210303 in words is "twenty-one billion, two hundred twenty-two million, two hundred ten thousand, three hundred three".