11123000043 has 32 divisors (see below), whose sum is σ = 15665664000. Its totient is φ = 7010582400.

The previous prime is 11123000041. The next prime is 11123000101. The reversal of 11123000043 is 34000032111.

It is not a de Polignac number, because 11123000043 - 2¹ = 11123000041 is a prime.

It is a super-2 number, since 2×11123000043² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11122999986 and 11123000031.

It is not an unprimeable number, because it can be changed into a prime (11123000041) 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, 838698 + ... + 851856.

It is an arithmetic number, because the mean of its divisors is an integer number (489552000).

Almost surely, 2^11123000043 is an apocalyptic number.

11123000043 is a deficient number, since it is larger than the sum of its proper divisors (4542663957).

11123000043 is a wasteful number, since it uses less digits than its factorization.

11123000043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13403.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 11123000043 its reverse (34000032111), we get a palindrome (45123032154).

The spelling of 11123000043 in words is "eleven billion, one hundred twenty-three million, forty-three", and thus it is an aban number.