11541222143 has 16 divisors (see below), whose sum is σ = 13108973472. Its totient is φ = 10068288000.

The previous prime is 11541222137. The next prime is 11541222163. The reversal of 11541222143 is 34122214511.

It is a happy number.

It is not a de Polignac number, because 11541222143 - 2¹⁶ = 11541156607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11541222113) 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, 182246 + ... + 237267.

It is an arithmetic number, because the mean of its divisors is an integer number (819310842).

Almost surely, 2^11541222143 is an apocalyptic number.

11541222143 is a deficient number, since it is larger than the sum of its proper divisors (1567751329).

11541222143 is a wasteful number, since it uses less digits than its factorization.

11541222143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419626.

The product of its digits is 1920, while the sum is 26.

Adding to 11541222143 its reverse (34122214511), we get a palindrome (45663436654).

The spelling of 11541222143 in words is "eleven billion, five hundred forty-one million, two hundred twenty-two thousand, one hundred forty-three".