11443121140 has 48 divisors (see below), whose sum is σ = 27060816384. Its totient is φ = 4026902400.

The previous prime is 11443121117. The next prime is 11443121143. The reversal of 11443121140 is 4112134411.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11443121143) 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, 832119 + ... + 845758.

It is an arithmetic number, because the mean of its divisors is an integer number (563767008).

Almost surely, 2^11443121140 is an apocalyptic number.

11443121140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11443121140 is an abundant number, since it is smaller than the sum of its proper divisors (15617695244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11443121140 is a wasteful number, since it uses less digits than its factorization.

11443121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677928 (or 1677926 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 11443121140 its reverse (4112134411), we get a palindrome (15555255551).

The spelling of 11443121140 in words is "eleven billion, four hundred forty-three million, one hundred twenty-one thousand, one hundred forty".