21241344201 has 32 divisors (see below), whose sum is σ = 35329975296. Its totient is φ = 11028312000.

The previous prime is 21241344149. The next prime is 21241344203. The reversal of 21241344201 is 10244314212.

It is not a de Polignac number, because 21241344201 - 2¹⁰ = 21241343177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21241344203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 405186 + ... + 454596.

It is an arithmetic number, because the mean of its divisors is an integer number (1104061728).

Almost surely, 2^21241344201 is an apocalyptic number.

21241344201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21241344201 is a deficient number, since it is larger than the sum of its proper divisors (14088631095).

21241344201 is a wasteful number, since it uses less digits than its factorization.

21241344201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51293.

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

Adding to 21241344201 its reverse (10244314212), we get a palindrome (31485658413).

The spelling of 21241344201 in words is "twenty-one billion, two hundred forty-one million, three hundred forty-four thousand, two hundred one".