1099900112 has 80 divisors (see below), whose sum is σ = 2294853120. Its totient is φ = 509414400.

The previous prime is 1099900103. The next prime is 1099900117. The reversal of 1099900112 is 2110099901.

It is a super-2 number, since 2×1099900112² = 2419560512755225088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099900117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4058537 + ... + 4058807.

It is an arithmetic number, because the mean of its divisors is an integer number (28685664).

Almost surely, 2^1099900112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099900112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1147426560).

1099900112 is an abundant number, since it is smaller than the sum of its proper divisors (1194953008).

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

1099900112 is a wasteful number, since it uses less digits than its factorization.

1099900112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 1099900112 is about 33164.7420011071. The cubic root of 1099900112 is about 1032.2488683299.

The spelling of 1099900112 in words is "one billion, ninety-nine million, nine hundred thousand, one hundred twelve".