11122543265 has 4 divisors (see below), whose sum is σ = 13347051924. Its totient is φ = 8898034608.

The previous prime is 11122543261. The next prime is 11122543307. The reversal of 11122543265 is 56234522111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56234522111 = 2791 ⋅20148521.

It can be written as a sum of positive squares in 2 ways, for example, as 4682801761 + 6439741504 = 68431^2 + 80248^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122543265 - 2² = 11122543261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122543261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112254322 + ... + 1112254331.

It is an arithmetic number, because the mean of its divisors is an integer number (3336762981).

Almost surely, 2^11122543265 is an apocalyptic number.

It is an amenable number.

11122543265 is a deficient number, since it is larger than the sum of its proper divisors (2224508659).

11122543265 is an equidigital number, since it uses as much as digits as its factorization.

11122543265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224508658.

The product of its digits is 14400, while the sum is 32.

The spelling of 11122543265 in words is "eleven billion, one hundred twenty-two million, five hundred forty-three thousand, two hundred sixty-five".