21422210130 has 120 divisors (see below), whose sum is σ = 59044887396. Its totient is φ = 5572903680.

The previous prime is 21422210107. The next prime is 21422210141. The reversal of 21422210130 is 3101222412.

It is a happy number.

21422210130 is a `hidden beast` number, since 2 + 1 + 422 + 210 + 1 + 30 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 130439241 + 21291770889 = 11421^2 + 145917^2 .

It is a super-2 number, since 2×21422210130² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1353744 + ... + 1369476.

Almost surely, 2^21422210130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21422210130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29522443698).

21422210130 is an abundant number, since it is smaller than the sum of its proper divisors (37622677266).

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

21422210130 is a wasteful number, since it uses less digits than its factorization.

21422210130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15834 (or 15784 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21422210130 its reverse (3101222412), we get a palindrome (24523432542).

The spelling of 21422210130 in words is "twenty-one billion, four hundred twenty-two million, two hundred ten thousand, one hundred thirty".