22123100 has 36 divisors (see below), whose sum is σ = 48293784. Its totient is φ = 8796480.

The previous prime is 22123097. The next prime is 22123133. The reversal of 22123100 is 132122.

It is a happy number.

It is a super-2 number, since 2×22123100² = 978863107220000, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19139 + ... + 20261.

It is an arithmetic number, because the mean of its divisors is an integer number (1341494).

Almost surely, 2^22123100 is an apocalyptic number.

22123100 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 22123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24146892).

22123100 is an abundant number, since it is smaller than the sum of its proper divisors (26170684).

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

22123100 is a wasteful number, since it uses less digits than its factorization.

22123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 22123100 is about 4703.5199584992. The cubic root of 22123100 is about 280.7255841041.

Adding to 22123100 its reverse (132122), we get a palindrome (22255222).

The spelling of 22123100 in words is "twenty-two million, one hundred twenty-three thousand, one hundred".