212212212211 has 4 divisors (see below), whose sum is σ = 212257167624. Its totient is φ = 212167256800.

The previous prime is 212212212101. The next prime is 212212212259. The reversal of 212212212211 is 112212212212.

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 212212212211 - 2²⁷ = 212077994483 is a prime.

It is a super-2 number, since 2×212212212211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212212213211) 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, 22470625 + ... + 22480066.

It is an arithmetic number, because the mean of its divisors is an integer number (53064291906).

Almost surely, 2^212212212211 is an apocalyptic number.

212212212211 is a deficient number, since it is larger than the sum of its proper divisors (44955413).

212212212211 is an equidigital number, since it uses as much as digits as its factorization.

212212212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44955412.

The product of its digits is 128, while the sum is 19.

Adding to 212212212211 its reverse (112212212212), we get a palindrome (324424424423).

Subtracting from 212212212211 its reverse (112212212212), we obtain a palindrome (99999999999).

The spelling of 212212212211 in words is "two hundred twelve billion, two hundred twelve million, two hundred twelve thousand, two hundred eleven".