21124113523325 has 12 divisors (see below), whose sum is σ = 26203285986528. Its totient is φ = 16893235839600.

The previous prime is 21124113523319. The next prime is 21124113523367. The reversal of 21124113523325 is 52332531142112.

It is not a de Polignac number, because 21124113523325 - 2⁸ = 21124113523069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151303307 + ... + 151442856.

It is an arithmetic number, because the mean of its divisors is an integer number (2183607165544).

Almost surely, 2^{21124113523325} is an apocalyptic number.

21124113523325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21124113523325 is a deficient number, since it is larger than the sum of its proper divisors (5079172463203).

21124113523325 is a wasteful number, since it uses less digits than its factorization.

21124113523325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302748964 (or 302748959 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

Adding to 21124113523325 its reverse (52332531142112), we get a palindrome (73456644665437).

The spelling of 21124113523325 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred thirteen million, five hundred twenty-three thousand, three hundred twenty-five".