21302232222 has 16 divisors (see below), whose sum is σ = 43755936912. Its totient is φ = 6908832000.

The previous prime is 21302232163. The next prime is 21302232241. The reversal of 21302232222 is 22223220312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47977779 + ... + 47978222.

It is an arithmetic number, because the mean of its divisors is an integer number (2734746057).

Almost surely, 2^21302232222 is an apocalyptic number.

21302232222 is an abundant number, since it is smaller than the sum of its proper divisors (22453704690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21302232222 is a wasteful number, since it uses less digits than its factorization.

21302232222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95956043.

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

Adding to 21302232222 its reverse (22223220312), we get a palindrome (43525452534).

The spelling of 21302232222 in words is "twenty-one billion, three hundred two million, two hundred thirty-two thousand, two hundred twenty-two".