2111231211 has 32 divisors (see below), whose sum is σ = 2986398720. Its totient is φ = 1324958976.

The previous prime is 2111231141. The next prime is 2111231261. The reversal of 2111231211 is 1121321112.

It is not a de Polignac number, because 2111231211 - 2⁹ = 2111230699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111231261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 462040 + ... + 466586.

It is an arithmetic number, because the mean of its divisors is an integer number (93324960).

Almost surely, 2^2111231211 is an apocalyptic number.

2111231211 is a deficient number, since it is larger than the sum of its proper divisors (875167509).

2111231211 is a wasteful number, since it uses less digits than its factorization.

2111231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723.

The product of its digits is 24, while the sum is 15.

The square root of 2111231211 is about 45948.1360993022. The cubic root of 2111231211 is about 1282.8580365200.

Adding to 2111231211 its reverse (1121321112), we get a palindrome (3232552323).

The spelling of 2111231211 in words is "two billion, one hundred eleven million, two hundred thirty-one thousand, two hundred eleven".