2111201211 has 48 divisors (see below), whose sum is σ = 3432388608. Its totient is φ = 1148716800.

The previous prime is 2111201201. The next prime is 2111201243. The reversal of 2111201211 is 1121021112.

It is not a de Polignac number, because 2111201211 - 2⁵ = 2111201179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111201201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 813526 + ... + 816116.

It is an arithmetic number, because the mean of its divisors is an integer number (71508096).

Almost surely, 2^2111201211 is an apocalyptic number.

2111201211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2111201211 is a deficient number, since it is larger than the sum of its proper divisors (1321187397).

2111201211 is a wasteful number, since it uses less digits than its factorization.

2111201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872 (or 2865 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2111201211 is about 45947.8096431157. The cubic root of 2111201211 is about 1282.8519601409.

Adding to 2111201211 its reverse (1121021112), we get a palindrome (3232222323).

The spelling of 2111201211 in words is "two billion, one hundred eleven million, two hundred one thousand, two hundred eleven".