11271161135 has 16 divisors (see below), whose sum is σ = 14579995584. Its totient is φ = 8315212032.

The previous prime is 11271161131. The next prime is 11271161137. The reversal of 11271161135 is 53116117211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11271161135 - 2² = 11271161131 is a prime.

It is a super-2 number, since 2×11271161135² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11271161098 and 11271161107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11271161131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16787 + ... + 151076.

It is an arithmetic number, because the mean of its divisors is an integer number (911249724).

Almost surely, 2^11271161135 is an apocalyptic number.

11271161135 is a deficient number, since it is larger than the sum of its proper divisors (3308834449).

11271161135 is a wasteful number, since it uses less digits than its factorization.

11271161135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168914.

The product of its digits is 1260, while the sum is 29.

Adding to 11271161135 its reverse (53116117211), we get a palindrome (64387278346).

The spelling of 11271161135 in words is "eleven billion, two hundred seventy-one million, one hundred sixty-one thousand, one hundred thirty-five".