1112201100 has 216 divisors, whose sum is σ = 3699572240. Its totient is φ = 278691840.

The previous prime is 1112201099. The next prime is 1112201141. The reversal of 1112201100 is 11022111.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3300132 + ... + 3300468.

Almost surely, 2^1112201100 is an apocalyptic number.

1112201100 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 1112201100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1849786120).

1112201100 is an abundant number, since it is smaller than the sum of its proper divisors (2587371140).

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

1112201100 is a wasteful number, since it uses less digits than its factorization.

1112201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1112201100 is about 33349.6791588765. The cubic root of 1112201100 is about 1036.0827428534.

Adding to 1112201100 its reverse (11022111), we get a palindrome (1123223211).

The spelling of 1112201100 in words is "one billion, one hundred twelve million, two hundred one thousand, one hundred".