21222321230 has 32 divisors (see below), whose sum is σ = 41972757120. Its totient is φ = 7661682720.

The previous prime is 21222321227. The next prime is 21222321233. The reversal of 21222321230 is 3212322212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21222321227) and next prime (21222321233).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222321233) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 678704 + ... + 709283.

It is an arithmetic number, because the mean of its divisors is an integer number (1311648660).

Almost surely, 2^21222321230 is an apocalyptic number.

21222321230 is a deficient number, since it is larger than the sum of its proper divisors (20750435890).

21222321230 is a wasteful number, since it uses less digits than its factorization.

21222321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388144.

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

Adding to 21222321230 its reverse (3212322212), we get a palindrome (24434643442).

The spelling of 21222321230 in words is "twenty-one billion, two hundred twenty-two million, three hundred twenty-one thousand, two hundred thirty".