211121120110211 has 4 divisors (see below), whose sum is σ = 211121814063672. Its totient is φ = 211120426156752.

The previous prime is 211121120110193. The next prime is 211121120110379. The reversal of 211121120110211 is 112011021121112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211121120110211 - 2¹⁰ = 211121120109187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211121120110211.

It is not an unprimeable number, because it can be changed into a prime (211121120110111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346520186 + ... + 347128911.

It is an arithmetic number, because the mean of its divisors is an integer number (52780453515918).

Almost surely, 2^{211121120110211} is an apocalyptic number.

211121120110211 is a deficient number, since it is larger than the sum of its proper divisors (693953461).

211121120110211 is an equidigital number, since it uses as much as digits as its factorization.

211121120110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693953460.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211121120110211 its reverse (112011021121112), we get a palindrome (323132141231323).

It can be divided in two parts, 21112 and 1120110211, that multiplied together give a palindrome (23647766774632).

The spelling of 211121120110211 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred twenty million, one hundred ten thousand, two hundred eleven".