211121021010211 has 16 divisors (see below), whose sum is σ = 232944973642080. Its totient is φ = 190096335348480.

The previous prime is 211121021010191. The next prime is 211121021010217. The reversal of 211121021010211 is 112010120121112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211121021010211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211121021010217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29493021 + ... + 35945518.

It is an arithmetic number, because the mean of its divisors is an integer number (14559060852630).

Almost surely, 2^{211121021010211} is an apocalyptic number.

211121021010211 is a deficient number, since it is larger than the sum of its proper divisors (21823952631869).

211121021010211 is a wasteful number, since it uses less digits than its factorization.

211121021010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65444646.

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

Adding to 211121021010211 its reverse (112010120121112), we get a palindrome (323131141131323).

The spelling of 211121021010211 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty-one million, ten thousand, two hundred eleven".