11544252121 has 4 divisors (see below), whose sum is σ = 11635151872. Its totient is φ = 11453352372.

The previous prime is 11544252119. The next prime is 11544252127. The reversal of 11544252121 is 12125244511.

11544252121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12125244511 = 41 ⋅295737671.

It is a cyclic number.

It is not a de Polignac number, because 11544252121 - 2¹ = 11544252119 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 11544252121.

It is not an unprimeable number, because it can be changed into a prime (11544252127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45449685 + ... + 45449938.

It is an arithmetic number, because the mean of its divisors is an integer number (2908787968).

Almost surely, 2^11544252121 is an apocalyptic number.

It is an amenable number.

11544252121 is a deficient number, since it is larger than the sum of its proper divisors (90899751).

11544252121 is an equidigital number, since it uses as much as digits as its factorization.

11544252121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90899750.

The product of its digits is 3200, while the sum is 28.

Adding to 11544252121 its reverse (12125244511), we get a palindrome (23669496632).

The spelling of 11544252121 in words is "eleven billion, five hundred forty-four million, two hundred fifty-two thousand, one hundred twenty-one".