11512120000 has 140 divisors (see below), whose sum is σ = 28676945440. Its totient is φ = 4583808000.

The previous prime is 11512119977. The next prime is 11512120063. The reversal of 11512120000 is 2121511.

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 19 ways as a sum of consecutive naturals, for example, 11079481 + ... + 11080519.

Almost surely, 2^11512120000 is an apocalyptic number.

11512120000 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 11512120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14338472720).

11512120000 is an abundant number, since it is smaller than the sum of its proper divisors (17164825440).

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

11512120000 is an equidigital number, since it uses as much as digits as its factorization.

11512120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

Adding to 11512120000 its reverse (2121511), we get a palindrome (11514241511).

The spelling of 11512120000 in words is "eleven billion, five hundred twelve million, one hundred twenty thousand".