21222110130 has 128 divisors (see below), whose sum is σ = 55346699520. Its totient is φ = 5176949760.

The previous prime is 21222110113. The next prime is 21222110141. The reversal of 21222110130 is 3101122212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26167425 + ... + 26168235.

It is an arithmetic number, because the mean of its divisors is an integer number (432396090).

Almost surely, 2^21222110130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21222110130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27673349760).

21222110130 is an abundant number, since it is smaller than the sum of its proper divisors (34124589390).

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

21222110130 is a wasteful number, since it uses less digits than its factorization.

21222110130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21222110130 its reverse (3101122212), we get a palindrome (24323232342).

The spelling of 21222110130 in words is "twenty-one billion, two hundred twenty-two million, one hundred ten thousand, one hundred thirty".