22130220 has 48 divisors (see below), whose sum is σ = 70818048. Its totient is φ = 5058240.

The previous prime is 22130179. The next prime is 22130221. The reversal of 22130220 is 2203122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22130196 and 22130205.

It is not an unprimeable number, because it can be changed into a prime (22130221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25926 + ... + 26765.

It is an arithmetic number, because the mean of its divisors is an integer number (1475376).

Almost surely, 2^22130220 is an apocalyptic number.

22130220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22130220 is an abundant number, since it is smaller than the sum of its proper divisors (48687828).

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

22130220 is a wasteful number, since it uses less digits than its factorization.

22130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52710 (or 52708 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22130220 is about 4704.2767775717. The cubic root of 22130220 is about 280.7556966979.

Adding to 22130220 its reverse (2203122), we get a palindrome (24333342).

The spelling of 22130220 in words is "twenty-two million, one hundred thirty thousand, two hundred twenty".