21241848124 has 48 divisors (see below), whose sum is σ = 43550293248. Its totient is φ = 8875859328.

The previous prime is 21241848119. The next prime is 21241848193. The reversal of 21241848124 is 42184814212.

It is a super-2 number, since 2×21241848124² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 662184 + ... + 693520.

It is an arithmetic number, because the mean of its divisors is an integer number (907297776).

Almost surely, 2^21241848124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21241848124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21775146624).

21241848124 is an abundant number, since it is smaller than the sum of its proper divisors (22308445124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21241848124 is a wasteful number, since it uses less digits than its factorization.

21241848124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31954 (or 31952 counting only the distinct ones).

The product of its digits is 32768, while the sum is 37.

The spelling of 21241848124 in words is "twenty-one billion, two hundred forty-one million, eight hundred forty-eight thousand, one hundred twenty-four".