1002112200 has 144 divisors (see below), whose sum is σ = 3474182400. Its totient is φ = 258595200.

The previous prime is 1002112187. The next prime is 1002112207. The reversal of 1002112200 is 22112001.

1002112200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1002112200² = 2008457722777680000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1002112207) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 46821 + ... + 64779.

Almost surely, 2^1002112200 is an apocalyptic number.

1002112200 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 1002112200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1737091200).

1002112200 is an abundant number, since it is smaller than the sum of its proper divisors (2472070200).

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

1002112200 is a wasteful number, since it uses less digits than its factorization.

1002112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18012 (or 18000 counting only the distinct ones).

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

The square root of 1002112200 is about 31656.1557994650. The cubic root of 1002112200 is about 1000.7035715377.

Adding to 1002112200 its reverse (22112001), we get a palindrome (1024224201).

The spelling of 1002112200 in words is "one billion, two million, one hundred twelve thousand, two hundred".