11124342021 has 12 divisors (see below), whose sum is σ = 16061180928. Its totient is φ = 6845748624.

The previous prime is 11124342013. The next prime is 11124342067. The reversal of 11124342021 is 12024342111.

It is not a de Polignac number, because 11124342021 - 2³ = 11124342013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11124342001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10970245 + ... + 10971258.

It is an arithmetic number, because the mean of its divisors is an integer number (1338431744).

Almost surely, 2^11124342021 is an apocalyptic number.

It is an amenable number.

11124342021 is a deficient number, since it is larger than the sum of its proper divisors (4936838907).

11124342021 is a wasteful number, since it uses less digits than its factorization.

11124342021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21941532 (or 21941519 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11124342021 its reverse (12024342111), we get a palindrome (23148684132).

The spelling of 11124342021 in words is "eleven billion, one hundred twenty-four million, three hundred forty-two thousand, twenty-one".