212220220211 has 4 divisors (see below), whose sum is σ = 213840222024. Its totient is φ = 210600218400.

The previous prime is 212220220207. The next prime is 212220220259. The reversal of 212220220211 is 112022022212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212220220211 - 2² = 212220220207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212220220211.

It is not an unprimeable number, because it can be changed into a prime (212220220271) 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, 810000710 + ... + 810000971.

It is an arithmetic number, because the mean of its divisors is an integer number (53460055506).

Almost surely, 2^212220220211 is an apocalyptic number.

212220220211 is a deficient number, since it is larger than the sum of its proper divisors (1620001813).

212220220211 is a wasteful number, since it uses less digits than its factorization.

212220220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620001812.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212220220211 its reverse (112022022212), we get a palindrome (324242242423).

The spelling of 212220220211 in words is "two hundred twelve billion, two hundred twenty million, two hundred twenty thousand, two hundred eleven".