21221012000211 has 8 divisors (see below), whose sum is σ = 28306717845504. Its totient is φ = 14141323744200.

The previous prime is 21221012000161. The next prime is 21221012000219. The reversal of 21221012000211 is 11200021012212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21221012000211 - 2⁹ = 21221011999699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21221012000219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1504389091 + ... + 1504403196.

It is an arithmetic number, because the mean of its divisors is an integer number (3538339730688).

Almost surely, 2^{21221012000211} is an apocalyptic number.

21221012000211 is a deficient number, since it is larger than the sum of its proper divisors (7085705845293).

21221012000211 is a wasteful number, since it uses less digits than its factorization.

21221012000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008794641.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21221012000211 its reverse (11200021012212), we get a palindrome (32421033012423).

The spelling of 21221012000211 in words is "twenty-one trillion, two hundred twenty-one billion, twelve million, two hundred eleven", and thus it is an aban number.