1244222200 has 192 divisors, whose sum is σ = 3299788800. Its totient is φ = 433036800.

The previous prime is 1244222183. The next prime is 1244222209. The reversal of 1244222200 is 22224421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244222209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3465621 + ... + 3465979.

It is an arithmetic number, because the mean of its divisors is an integer number (17186400).

Almost surely, 2^1244222200 is an apocalyptic number.

1244222200 is a gapful number since it is divisible by the number (10) 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 1244222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649894400).

1244222200 is an abundant number, since it is smaller than the sum of its proper divisors (2055566600).

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

1244222200 is a wasteful number, since it uses less digits than its factorization.

1244222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1244222200 is about 35273.5339879633. The cubic root of 1244222200 is about 1075.5550621888. Note that the first 3 decimals are identical.

Adding to 1244222200 its reverse (22224421), we get a palindrome (1266446621).

The spelling of 1244222200 in words is "one billion, two hundred forty-four million, two hundred twenty-two thousand, two hundred".