11126330261 has 4 divisors (see below), whose sum is σ = 11127035724. Its totient is φ = 11125624800.

The previous prime is 11126330233. The next prime is 11126330263. The reversal of 11126330261 is 16203362111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16203362111 = 10259 ⋅1579429.

It can be written as a sum of positive squares in 2 ways, for example, as 4943496100 + 6182834161 = 70310^2 + 78631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11126330261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11126330261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11126330263) 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, 328520 + ... + 360801.

It is an arithmetic number, because the mean of its divisors is an integer number (2781758931).

Almost surely, 2^11126330261 is an apocalyptic number.

It is an amenable number.

11126330261 is a deficient number, since it is larger than the sum of its proper divisors (705463).

11126330261 is an equidigital number, since it uses as much as digits as its factorization.

11126330261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705462.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 11126330261 its reverse (16203362111), we get a palindrome (27329692372).

The spelling of 11126330261 in words is "eleven billion, one hundred twenty-six million, three hundred thirty thousand, two hundred sixty-one".