22245100 has 36 divisors (see below), whose sum is σ = 49309344. Its totient is φ = 8706880.

The previous prime is 22245089. The next prime is 22245109. The reversal of 22245100 is 154222.

It is not an unprimeable number, because it can be changed into a prime (22245109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2334 + ... + 7066.

It is an arithmetic number, because the mean of its divisors is an integer number (1369704).

Almost surely, 2^22245100 is an apocalyptic number.

22245100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22245100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24654672).

22245100 is an abundant number, since it is smaller than the sum of its proper divisors (27064244).

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

22245100 is a wasteful number, since it uses less digits than its factorization.

22245100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4794 (or 4787 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22245100 is about 4716.4711384678. The cubic root of 22245100 is about 281.2406680031.

Adding to 22245100 its reverse (154222), we get a palindrome (22399322).

The spelling of 22245100 in words is "twenty-two million, two hundred forty-five thousand, one hundred".