3111212112211 has 48 divisors (see below), whose sum is σ = 3667757505984. Its totient is φ = 2631161788416.

The previous prime is 3111212112187. The next prime is 3111212112221. The reversal of 3111212112211 is 1122112121113.

It is not a de Polignac number, because 3111212112211 - 2¹⁹ = 3111211587923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3111212112221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2564889841 + ... + 2564891053.

It is an arithmetic number, because the mean of its divisors is an integer number (76411614708).

Almost surely, 2^{3111212112211} is an apocalyptic number.

3111212112211 is a deficient number, since it is larger than the sum of its proper divisors (556545393773).

3111212112211 is a wasteful number, since it uses less digits than its factorization.

3111212112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780 (or 2773 counting only the distinct ones).

The product of its digits is 48, while the sum is 19.

Adding to 3111212112211 its reverse (1122112121113), we get a palindrome (4233324233324).

The spelling of 3111212112211 in words is "three trillion, one hundred eleven billion, two hundred twelve million, one hundred twelve thousand, two hundred eleven".