11135340121 has 4 divisors (see below), whose sum is σ = 11345440932. Its totient is φ = 10925239312.

The previous prime is 11135340107. The next prime is 11135340133. The reversal of 11135340121 is 12104353111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12104353111 = 1307 ⋅9261173.

It can be written as a sum of positive squares in 2 ways, for example, as 8429259721 + 2706080400 = 91811^2 + 52020^2 .

It is a cyclic number.

It is not a de Polignac number, because 11135340121 - 2¹⁹ = 11134815833 is a prime.

It is a super-2 number, since 2×11135340121² (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 = 11135340092 and 11135340101.

It is not an unprimeable number, because it can be changed into a prime (11135340191) 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, 105050326 + ... + 105050431.

It is an arithmetic number, because the mean of its divisors is an integer number (2836360233).

Almost surely, 2^11135340121 is an apocalyptic number.

It is an amenable number.

11135340121 is a deficient number, since it is larger than the sum of its proper divisors (210100811).

11135340121 is an equidigital number, since it uses as much as digits as its factorization.

11135340121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210100810.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 11135340121 its reverse (12104353111), we get a palindrome (23239693232).

The spelling of 11135340121 in words is "eleven billion, one hundred thirty-five million, three hundred forty thousand, one hundred twenty-one".