212120122222211 has 8 divisors (see below), whose sum is σ = 242423129539584. Its totient is φ = 181817148083400.

The previous prime is 212120122222207. The next prime is 212120122222231. The reversal of 212120122222211 is 112222221021212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212120122222211 - 2² = 212120122222207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212120122222231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7379996 + ... + 21879318.

It is an arithmetic number, because the mean of its divisors is an integer number (30302891192448).

Almost surely, 2^{212120122222211} is an apocalyptic number.

212120122222211 is a deficient number, since it is larger than the sum of its proper divisors (30303007317373).

212120122222211 is a wasteful number, since it uses less digits than its factorization.

212120122222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16589281.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212120122222211 its reverse (112222221021212), we get a palindrome (324342343243423).

The spelling of 212120122222211 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".