2111212120211 has 8 divisors (see below), whose sum is σ = 2225684158464. Its totient is φ = 1999638108360.

The previous prime is 2111212120207. The next prime is 2111212120243. The reversal of 2111212120211 is 1120212121112.

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 2111212120211 - 2² = 2111212120207 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 2111212120211.

It is not an unprimeable number, because it can be changed into a prime (2111212120711) 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, 724505105 + ... + 724508018.

It is an arithmetic number, because the mean of its divisors is an integer number (278210519808).

Almost surely, 2^{2111212120211} is an apocalyptic number.

2111212120211 is a deficient number, since it is larger than the sum of its proper divisors (114472038253).

2111212120211 is a wasteful number, since it uses less digits than its factorization.

2111212120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449013201.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2111212120211 its reverse (1120212121112), we get a palindrome (3231424241323).

Subtracting from 2111212120211 its reverse (1120212121112), we obtain a palindrome (990999999099).

It can be divided in two parts, 211121 and 2120211, that added together give a palindrome (2331332).

The spelling of 2111212120211 in words is "two trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty thousand, two hundred eleven".