21241301424 has 80 divisors (see below), whose sum is σ = 62733984768. Its totient is φ = 6066855936.

The previous prime is 21241301369. The next prime is 21241301453. The reversal of 21241301424 is 42410314212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 21241301394 and 21241301403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152409 + ... + 1170695.

Almost surely, 2^21241301424 is an apocalyptic number.

21241301424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21241301424 is an abundant number, since it is smaller than the sum of its proper divisors (41492683344).

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

21241301424 is a wasteful number, since it uses less digits than its factorization.

21241301424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21762 (or 21756 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21241301424 its reverse (42410314212), we get a palindrome (63651615636).

The spelling of 21241301424 in words is "twenty-one billion, two hundred forty-one million, three hundred one thousand, four hundred twenty-four".