211423001121 has 8 divisors (see below), whose sum is σ = 313219260960. Its totient is φ = 140948667396.

The previous prime is 211423001117. The next prime is 211423001189. The reversal of 211423001121 is 121100324112.

211423001121 is a `hidden beast` number, since 211 + 42 + 300 + 112 + 1 = 666.

211423001121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211423001121 - 2² = 211423001117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211423001094 and 211423001103.

It is not an unprimeable number, because it can be changed into a prime (211423001021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3915240735 + ... + 3915240788.

It is an arithmetic number, because the mean of its divisors is an integer number (39152407620).

Almost surely, 2^211423001121 is an apocalyptic number.

It is an amenable number.

211423001121 is a deficient number, since it is larger than the sum of its proper divisors (101796259839).

211423001121 is an equidigital number, since it uses as much as digits as its factorization.

211423001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7830481532 (or 7830481526 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211423001121 its reverse (121100324112), we get a palindrome (332523325233).

The spelling of 211423001121 in words is "two hundred eleven billion, four hundred twenty-three million, one thousand, one hundred twenty-one".