1131200200 has 96 divisors (see below), whose sum is σ = 2886143400. Its totient is φ = 409743360.

The previous prime is 1131200197. The next prime is 1131200219. The reversal of 1131200200 is 20021311.

It can be written as a sum of positive squares in 12 ways, for example, as 9084196 + 1122116004 = 3014^2 + 33498^2 .

It is a super-2 number, since 2×1131200200² = 2559227784960080000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133696 + ... + 141904.

Almost surely, 2^1131200200 is an apocalyptic number.

1131200200 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 1131200200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443071700).

1131200200 is an abundant number, since it is smaller than the sum of its proper divisors (1754943200).

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

1131200200 is a wasteful number, since it uses less digits than its factorization.

1131200200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8291 (or 8282 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1131200200 is about 33633.3197885668. The cubic root of 1131200200 is about 1041.9490693163.

Adding to 1131200200 its reverse (20021311), we get a palindrome (1151221511).

The spelling of 1131200200 in words is "one billion, one hundred thirty-one million, two hundred thousand, two hundred".