11124131421 has 16 divisors (see below), whose sum is σ = 15987398336. Its totient is φ = 6839496576.

The previous prime is 11124131413. The next prime is 11124131453. The reversal of 11124131421 is 12413142111.

11124131421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11124131421 - 2³ = 11124131413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11124131461) 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 15 ways as a sum of consecutive naturals, for example, 83200 + ... + 170793.

It is an arithmetic number, because the mean of its divisors is an integer number (999212396).

Almost surely, 2^11124131421 is an apocalyptic number.

It is an amenable number.

11124131421 is a deficient number, since it is larger than the sum of its proper divisors (4863266915).

11124131421 is a wasteful number, since it uses less digits than its factorization.

11124131421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255132.

The product of its digits is 192, while the sum is 21.

Adding to 11124131421 its reverse (12413142111), we get a palindrome (23537273532).

It can be divided in two parts, 11 and 124131421, that multiplied together give a palindrome (1365445631).

The spelling of 11124131421 in words is "eleven billion, one hundred twenty-four million, one hundred thirty-one thousand, four hundred twenty-one".