212213242312211 has 4 divisors (see below), whose sum is σ = 242529419785392. Its totient is φ = 181897064839032.

The previous prime is 212213242312157. The next prime is 212213242312217. The reversal of 212213242312211 is 112213242312212.

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 212213242312211 - 2⁶ = 212213242312147 is a prime.

It is a super-2 number, since 2×212213242312211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212213242312217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15158088736580 + ... + 15158088736593.

It is an arithmetic number, because the mean of its divisors is an integer number (60632354946348).

Almost surely, 2^{212213242312211} is an apocalyptic number.

212213242312211 is a deficient number, since it is larger than the sum of its proper divisors (30316177473181).

212213242312211 is an equidigital number, since it uses as much as digits as its factorization.

212213242312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30316177473180.

The product of its digits is 4608, while the sum is 29.

Adding to 212213242312211 its reverse (112213242312212), we get a palindrome (324426484624423).

Subtracting from 212213242312211 its reverse (112213242312212), we obtain a palindrome (99999999999999).

The spelling of 212213242312211 in words is "two hundred twelve trillion, two hundred thirteen billion, two hundred forty-two million, three hundred twelve thousand, two hundred eleven".