21241101125 has 16 divisors (see below), whose sum is σ = 26519762880. Its totient is φ = 16985914000.

The previous prime is 21241101121. The next prime is 21241101131. The reversal of 21241101125 is 52110114212.

It is not a de Polignac number, because 21241101125 - 2² = 21241101121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21241101097 and 21241101106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241101121) 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, 282806 + ... + 349944.

It is an arithmetic number, because the mean of its divisors is an integer number (1657485180).

Almost surely, 2^21241101125 is an apocalyptic number.

21241101125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21241101125 is a deficient number, since it is larger than the sum of its proper divisors (5278661755).

21241101125 is an equidigital number, since it uses as much as digits as its factorization.

21241101125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69685 (or 69675 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 21241101125 its reverse (52110114212), we get a palindrome (73351215337).

The spelling of 21241101125 in words is "twenty-one billion, two hundred forty-one million, one hundred one thousand, one hundred twenty-five".