1143440115211 has 4 divisors (see below), whose sum is σ = 1157914040800. Its totient is φ = 1128966189624.

The previous prime is 1143440115197. The next prime is 1143440115221. The reversal of 1143440115211 is 1125110443411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143440115211 - 2²⁷ = 1143305897483 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 1143440115211.

It is not an unprimeable number, because it can be changed into a prime (1143440115221) 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, 7236962676 + ... + 7236962833.

It is an arithmetic number, because the mean of its divisors is an integer number (289478510200).

Almost surely, 2^{1143440115211} is an apocalyptic number.

1143440115211 is a deficient number, since it is larger than the sum of its proper divisors (14473925589).

1143440115211 is an equidigital number, since it uses as much as digits as its factorization.

1143440115211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14473925588.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 1143440115211 its reverse (1125110443411), we get a palindrome (2268550558622).

The spelling of 1143440115211 in words is "one trillion, one hundred forty-three billion, four hundred forty million, one hundred fifteen thousand, two hundred eleven".