21010110110211 has 8 divisors (see below), whose sum is σ = 28068516455760. Its totient is φ = 13979221919072.

The previous prime is 21010110110207. The next prime is 21010110110239. The reversal of 21010110110211 is 11201101101012.

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 21010110110211 - 2² = 21010110110207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21010110110611) 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, 6879536820 + ... + 6879539873.

It is an arithmetic number, because the mean of its divisors is an integer number (3508564556970).

Almost surely, 2^{21010110110211} is an apocalyptic number.

21010110110211 is a deficient number, since it is larger than the sum of its proper divisors (7058406345549).

21010110110211 is a wasteful number, since it uses less digits than its factorization.

21010110110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13759077205.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21010110110211 its reverse (11201101101012), we get a palindrome (32211211211223).

The spelling of 21010110110211 in words is "twenty-one trillion, ten billion, one hundred ten million, one hundred ten thousand, two hundred eleven".