11123012145 has 32 divisors (see below), whose sum is σ = 20394713088. Its totient is φ = 5070932928.

The previous prime is 11123012123. The next prime is 11123012179. The reversal of 11123012145 is 54121032111.

It is not a de Polignac number, because 11123012145 - 2¹¹ = 11123010097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105789 + ... + 182858.

It is an arithmetic number, because the mean of its divisors is an integer number (637334784).

Almost surely, 2^11123012145 is an apocalyptic number.

11123012145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11123012145 is a deficient number, since it is larger than the sum of its proper divisors (9271700943).

11123012145 is a wasteful number, since it uses less digits than its factorization.

11123012145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289029.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11123012145 its reverse (54121032111), we get a palindrome (65244044256).

The spelling of 11123012145 in words is "eleven billion, one hundred twenty-three million, twelve thousand, one hundred forty-five".