11100120045 has 32 divisors (see below), whose sum is σ = 21179860992. Its totient is φ = 4853716032.

The previous prime is 11100120043. The next prime is 11100120077. The reversal of 11100120045 is 54002100111.

It is a happy number.

It is not a de Polignac number, because 11100120045 - 2¹ = 11100120043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100120043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2295747 + ... + 2300576.

It is an arithmetic number, because the mean of its divisors is an integer number (661870656).

Almost surely, 2^11100120045 is an apocalyptic number.

11100120045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11100120045 is a deficient number, since it is larger than the sum of its proper divisors (10079740947).

11100120045 is a wasteful number, since it uses less digits than its factorization.

11100120045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596361.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 11100120045 its reverse (54002100111), we get a palindrome (65102220156).

The spelling of 11100120045 in words is "eleven billion, one hundred million, one hundred twenty thousand, forty-five".