21241101212 has 12 divisors (see below), whose sum is σ = 37182599496. Its totient is φ = 10617501360.

The previous prime is 21241101179. The next prime is 21241101223. The reversal of 21241101212 is 21210114212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746603 + ... + 774530.

It is an arithmetic number, because the mean of its divisors is an integer number (3098549958).

Almost surely, 2^21241101212 is an apocalyptic number.

It is an amenable number.

21241101212 is a deficient number, since it is larger than the sum of its proper divisors (15941498284).

21241101212 is a wasteful number, since it uses less digits than its factorization.

21241101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524628 (or 1524626 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21241101212 its reverse (21210114212), we get a palindrome (42451215424).

The spelling of 21241101212 in words is "twenty-one billion, two hundred forty-one million, one hundred one thousand, two hundred twelve".