11544212120 has 128 divisors (see below), whose sum is σ = 30848947200. Its totient is φ = 3804089856.

The previous prime is 11544212111. The next prime is 11544212123. The reversal of 11544212120 is 2121244511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11544212123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1840109 + ... + 1846371.

It is an arithmetic number, because the mean of its divisors is an integer number (241007400).

Almost surely, 2^11544212120 is an apocalyptic number.

11544212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11544212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15424473600).

11544212120 is an abundant number, since it is smaller than the sum of its proper divisors (19304735080).

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

11544212120 is a wasteful number, since it uses less digits than its factorization.

11544212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6537 (or 6533 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 11544212120 its reverse (2121244511), we get a palindrome (13665456631).

The spelling of 11544212120 in words is "eleven billion, five hundred forty-four million, two hundred twelve thousand, one hundred twenty".