21524122141 has 16 divisors (see below), whose sum is σ = 22020422400. Its totient is φ = 21034556928.

The previous prime is 21524122099. The next prime is 21524122181. The reversal of 21524122141 is 14122142512.

It is a cyclic number.

It is not a de Polignac number, because 21524122141 - 2¹⁹ = 21523597853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21524122181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3808780 + ... + 3814426.

It is an arithmetic number, because the mean of its divisors is an integer number (1376276400).

Almost surely, 2^21524122141 is an apocalyptic number.

It is an amenable number.

21524122141 is a deficient number, since it is larger than the sum of its proper divisors (496300259).

21524122141 is a wasteful number, since it uses less digits than its factorization.

21524122141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228.

The product of its digits is 1280, while the sum is 25.

Adding to 21524122141 its reverse (14122142512), we get a palindrome (35646264653).

The spelling of 21524122141 in words is "twenty-one billion, five hundred twenty-four million, one hundred twenty-two thousand, one hundred forty-one".