21241101211 has 12 divisors (see below), whose sum is σ = 23554288296. Its totient is φ = 19139193920.

The previous prime is 21241101179. The next prime is 21241101223. The reversal of 21241101211 is 11210114212.

It is not a de Polignac number, because 21241101211 - 2⁵ = 21241101179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21241101811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 763081 + ... + 790426.

It is an arithmetic number, because the mean of its divisors is an integer number (1962857358).

Almost surely, 2^21241101211 is an apocalyptic number.

21241101211 is a deficient number, since it is larger than the sum of its proper divisors (2313187085).

21241101211 is a wasteful number, since it uses less digits than its factorization.

21241101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553642 (or 1553631 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21241101211 its reverse (11210114212), we get a palindrome (32451215423).

The spelling of 21241101211 in words is "twenty-one billion, two hundred forty-one million, one hundred one thousand, two hundred eleven".