212222122211 has 8 divisors (see below), whose sum is σ = 231526239024. Its totient is φ = 192919871520.

The previous prime is 212222122171. The next prime is 212222122249. The reversal of 212222122211 is 112221222212.

212222122211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212222122211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212222122261) 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, 223220 + ... + 688673.

It is an arithmetic number, because the mean of its divisors is an integer number (28940779878).

Almost surely, 2^212222122211 is an apocalyptic number.

212222122211 is a deficient number, since it is larger than the sum of its proper divisors (19304116813).

212222122211 is a wasteful number, since it uses less digits than its factorization.

212222122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933061.

The product of its digits is 256, while the sum is 20.

Adding to 212222122211 its reverse (112221222212), we get a palindrome (324443344423).

It can be divided in two parts, 212222 and 122211, that added together give a palindrome (334433).

The spelling of 212222122211 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".