21222004642130 has 64 divisors (see below), whose sum is σ = 38531411614080. Its totient is φ = 8415338241024.

The previous prime is 21222004642127. The next prime is 21222004642169. The reversal of 21222004642130 is 3124640022212.

It is a junction number, because it is equal to n+sod(n) for n = 21222004642093 and 21222004642102.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1390778441 + ... + 1390793699.

It is an arithmetic number, because the mean of its divisors is an integer number (602053306470).

Almost surely, 2^{21222004642130} is an apocalyptic number.

21222004642130 is a deficient number, since it is larger than the sum of its proper divisors (17309406971950).

21222004642130 is a wasteful number, since it uses less digits than its factorization.

21222004642130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17403.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 21222004642130 its reverse (3124640022212), we get a palindrome (24346644664342).

The spelling of 21222004642130 in words is "twenty-one trillion, two hundred twenty-two billion, four million, six hundred forty-two thousand, one hundred thirty".