21202322223 has 8 divisors (see below), whose sum is σ = 28927199488. Its totient is φ = 13806163224.

The previous prime is 21202322221. The next prime is 21202322227. The reversal of 21202322223 is 32222320212.

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

It is not a de Polignac number, because 21202322223 - 2¹ = 21202322221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21202322223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202322221) 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, 82179415 + ... + 82179672.

It is an arithmetic number, because the mean of its divisors is an integer number (3615899936).

Almost surely, 2^21202322223 is an apocalyptic number.

21202322223 is a deficient number, since it is larger than the sum of its proper divisors (7724877265).

21202322223 is a wasteful number, since it uses less digits than its factorization.

21202322223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164359133.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21202322223 its reverse (32222320212), we get a palindrome (53424642435).

The spelling of 21202322223 in words is "twenty-one billion, two hundred two million, three hundred twenty-two thousand, two hundred twenty-three".