11143443013121 has 4 divisors (see below), whose sum is σ = 11353696654932. Its totient is φ = 10933189371312.

The previous prime is 11143443013117. The next prime is 11143443013139. The reversal of 11143443013121 is 12131034434111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6944779737025 + 4198663276096 = 2635295^2 + 2049064^2 .

It is a cyclic number.

It is not a de Polignac number, because 11143443013121 - 2² = 11143443013117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11143443013421) 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, 105126820826 + ... + 105126820931.

It is an arithmetic number, because the mean of its divisors is an integer number (2838424163733).

Almost surely, 2^{11143443013121} is an apocalyptic number.

It is an amenable number.

11143443013121 is a deficient number, since it is larger than the sum of its proper divisors (210253641811).

11143443013121 is an equidigital number, since it uses as much as digits as its factorization.

11143443013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210253641810.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 11143443013121 its reverse (12131034434111), we get a palindrome (23274477447232).

The spelling of 11143443013121 in words is "eleven trillion, one hundred forty-three billion, four hundred forty-three million, thirteen thousand, one hundred twenty-one".