11121004545 has 32 divisors (see below), whose sum is σ = 20342430720.
Its totient is φ = 5082168000.
The previous prime is 11121004481. The next prime is 11121004547. The reversal of 11121004545 is 54540012111.
It is not a de Polignac number, because 11121004545 - 26 = 11121004481 is a prime.
It is not an unprimeable number, because it can be changed into a prime (11121004547) by changing a digit.
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 31 ways as a sum of consecutive naturals, for example, 325066 + ... + 357644.
It is an arithmetic number, because the mean of its divisors is an integer number (635700960).
Almost surely, 211121004545 is an apocalyptic number.
11121004545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
11121004545 is a deficient number, since it is larger than the sum of its proper divisors (9221426175).
11121004545 is a wasteful number, since it uses less digits than its factorization.
11121004545 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 35845.
The product of its (nonzero) digits is 800, while the sum is 24.
Adding to 11121004545 its reverse (54540012111), we get a palindrome (65661016656).
The spelling of 11121004545 in words is "eleven billion, one hundred twenty-one million, four thousand, five hundred forty-five".