21102210001211 has 8 divisors (see below), whose sum is σ = 22020828873120. Its totient is φ = 20183685419392.

The previous prime is 21102210001207. The next prime is 21102210001241. The reversal of 21102210001211 is 11210001220112.

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

It is a cyclic number.

It is not a de Polignac number, because 21102210001211 - 2² = 21102210001207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102210001241) 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, 23114990 + ... + 24010563.

It is an arithmetic number, because the mean of its divisors is an integer number (2752603609140).

Almost surely, 2^{21102210001211} is an apocalyptic number.

21102210001211 is a deficient number, since it is larger than the sum of its proper divisors (918618871909).

21102210001211 is a wasteful number, since it uses less digits than its factorization.

21102210001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47145045.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21102210001211 its reverse (11210001220112), we get a palindrome (32312211221323).

The spelling of 21102210001211 in words is "twenty-one trillion, one hundred two billion, two hundred ten million, one thousand, two hundred eleven".