211122111101211 has 16 divisors (see below), whose sum is σ = 316287806896800. Its totient is φ = 139166635031424.

The previous prime is 211122111101207. The next prime is 211122111101267. The reversal of 211122111101211 is 112101111221112.

211122111101211 is a `hidden beast` number, since 21 + 112 + 211 + 110 + 1 + 211 = 666.

It is not a de Polignac number, because 211122111101211 - 2² = 211122111101207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211122111101281) 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 15 ways as a sum of consecutive naturals, for example, 43928859666 + ... + 43928864471.

It is an arithmetic number, because the mean of its divisors is an integer number (19767987931050).

Almost surely, 2^{211122111101211} is an apocalyptic number.

211122111101211 is a deficient number, since it is larger than the sum of its proper divisors (105165695795589).

211122111101211 is an equidigital number, since it uses as much as digits as its factorization.

211122111101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87857724235 (or 87857724229 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 211122111101211 its reverse (112101111221112), we get a palindrome (323223222322323).

The spelling of 211122111101211 in words is "two hundred eleven trillion, one hundred twenty-two billion, one hundred eleven million, one hundred one thousand, two hundred eleven".