222124400 has 60 divisors (see below), whose sum is σ = 541035312. Its totient is φ = 87621120.

The previous prime is 222124391. The next prime is 222124417. The reversal of 222124400 is 4421222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25397 + ... + 33003.

Almost surely, 2^222124400 is an apocalyptic number.

222124400 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 222124400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270517656).

222124400 is an abundant number, since it is smaller than the sum of its proper divisors (318910912).

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

222124400 is a wasteful number, since it uses less digits than its factorization.

222124400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7698 (or 7687 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 222124400 is about 14903.8384317598. The cubic root of 222124400 is about 605.6179738457.

Adding to 222124400 its reverse (4421222), we get a palindrome (226545622).

The spelling of 222124400 in words is "two hundred twenty-two million, one hundred twenty-four thousand, four hundred".