1122100200 has 288 divisors, whose sum is σ = 4116403200. Its totient is φ = 272263680.

The previous prime is 1122100193. The next prime is 1122100201. The reversal of 1122100200 is 20012211.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122100201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1848297 + ... + 1848903.

Almost surely, 2^1122100200 is an apocalyptic number.

1122100200 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 1122100200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2058201600).

1122100200 is an abundant number, since it is smaller than the sum of its proper divisors (2994303000).

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

1122100200 is a wasteful number, since it uses less digits than its factorization.

1122100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1122100200 is about 33497.7641044891. The cubic root of 1122100200 is about 1039.1475386296.

Adding to 1122100200 its reverse (20012211), we get a palindrome (1142112411).

The spelling of 1122100200 in words is "one billion, one hundred twenty-two million, one hundred thousand, two hundred".