212122102120211 has 4 divisors (see below), whose sum is σ = 212194572947232. Its totient is φ = 212049631293192.

The previous prime is 212122102120157. The next prime is 212122102120273. The reversal of 212122102120211 is 112021201221212.

212122102120211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212122102120211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212127102120211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36235409120 + ... + 36235414973.

It is an arithmetic number, because the mean of its divisors is an integer number (53048643236808).

Almost surely, 2^{212122102120211} is an apocalyptic number.

212122102120211 is a deficient number, since it is larger than the sum of its proper divisors (72470827021).

212122102120211 is an equidigital number, since it uses as much as digits as its factorization.

212122102120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72470827020.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212122102120211 its reverse (112021201221212), we get a palindrome (324143303341423).

The spelling of 212122102120211 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred two million, one hundred twenty thousand, two hundred eleven".