11143121144 has 32 divisors (see below), whose sum is σ = 21827625120. Its totient is φ = 5322996096.

The previous prime is 11143121141. The next prime is 11143121149. The reversal of 11143121144 is 44112134111.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143121141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121454 + ... + 192450.

It is an arithmetic number, because the mean of its divisors is an integer number (682113285).

Almost surely, 2^11143121144 is an apocalyptic number.

It is an amenable number.

11143121144 is a deficient number, since it is larger than the sum of its proper divisors (10684503976).

11143121144 is a wasteful number, since it uses less digits than its factorization.

11143121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71879 (or 71875 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

Adding to 11143121144 its reverse (44112134111), we get a palindrome (55255255255).

The spelling of 11143121144 in words is "eleven billion, one hundred forty-three million, one hundred twenty-one thousand, one hundred forty-four".