11521143341 has 4 divisors (see below), whose sum is σ = 11521987452. Its totient is φ = 11520299232.

The previous prime is 11521143223. The next prime is 11521143379. The reversal of 11521143341 is 14334112511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14334112511 = 61 ⋅234985451.

It can be written as a sum of positive squares in 2 ways, for example, as 3266694025 + 8254449316 = 57155^2 + 90854^2 .

It is a cyclic number.

It is not a de Polignac number, because 11521143341 - 2¹⁰ = 11521142317 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 11521143341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521143841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401240 + ... + 428993.

It is an arithmetic number, because the mean of its divisors is an integer number (2880496863).

Almost surely, 2^11521143341 is an apocalyptic number.

It is an amenable number.

11521143341 is a deficient number, since it is larger than the sum of its proper divisors (844111).

11521143341 is an equidigital number, since it uses as much as digits as its factorization.

11521143341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844110.

The product of its digits is 1440, while the sum is 26.

Adding to 11521143341 its reverse (14334112511), we get a palindrome (25855255852).

The spelling of 11521143341 in words is "eleven billion, five hundred twenty-one million, one hundred forty-three thousand, three hundred forty-one".