1155210112 has 128 divisors (see below), whose sum is σ = 2809080000. Its totient is φ = 461930496.

The previous prime is 1155210109. The next prime is 1155210143. The reversal of 1155210112 is 2110125511.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 1155210112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2269314 + ... + 2269822.

Almost surely, 2^1155210112 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 1155210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404540000).

1155210112 is an abundant number, since it is smaller than the sum of its proper divisors (1653869888).

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

1155210112 is a wasteful number, since it uses less digits than its factorization.

1155210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 19.

The square root of 1155210112 is about 33988.3820150357. The cubic root of 1155210112 is about 1049.2693668456.

Adding to 1155210112 its reverse (2110125511), we get a palindrome (3265335623).

The spelling of 1155210112 in words is "one billion, one hundred fifty-five million, two hundred ten thousand, one hundred twelve".