22100130 has 72 divisors (see below), whose sum is σ = 62263188. Its totient is φ = 5436288.

The previous prime is 22100129. The next prime is 22100131. The reversal of 22100130 is 3100122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22100129) and next prime (22100131).

It can be written as a sum of positive squares in 6 ways, for example, as 7834401 + 14265729 = 2799^2 + 3777^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (22100131) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14484 + ... + 15936.

Almost surely, 2^22100130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22100130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31131594).

22100130 is an abundant number, since it is smaller than the sum of its proper divisors (40163058).

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

22100130 is a wasteful number, since it uses less digits than its factorization.

22100130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492 (or 1476 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 22100130 is about 4701.0775360549. The cubic root of 22100130 is about 280.6283930886.

Adding to 22100130 its reverse (3100122), we get a palindrome (25200252).

The spelling of 22100130 in words is "twenty-two million, one hundred thousand, one hundred thirty".