211021112021122 has 16 divisors (see below), whose sum is σ = 341089772550912. Its totient is φ = 97334498059920.

The previous prime is 211021112021099. The next prime is 211021112021173. The reversal of 211021112021122 is 221120211120112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 211021112021122.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2494179154 + ... + 2494263757.

It is an arithmetic number, because the mean of its divisors is an integer number (21318110784432).

Almost surely, 2^{211021112021122} is an apocalyptic number.

211021112021122 is a deficient number, since it is larger than the sum of its proper divisors (130068660529790).

211021112021122 is a wasteful number, since it uses less digits than its factorization.

211021112021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988444553.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211021112021122 its reverse (221120211120112), we get a palindrome (432141323141234).

The spelling of 211021112021122 in words is "two hundred eleven trillion, twenty-one billion, one hundred twelve million, twenty-one thousand, one hundred twenty-two".