12122202122211 has 4 divisors (see below), whose sum is σ = 16162936162952. Its totient is φ = 8081468081472.

The previous prime is 12122202122189. The next prime is 12122202122213. The reversal of 12122202122211 is 11222120222121.

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

It is not a de Polignac number, because 12122202122211 - 2¹¹ = 12122202120163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122202122213) 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, 2020367020366 + ... + 2020367020371.

It is an arithmetic number, because the mean of its divisors is an integer number (4040734040738).

Almost surely, 2^{12122202122211} is an apocalyptic number.

12122202122211 is a deficient number, since it is larger than the sum of its proper divisors (4040734040741).

12122202122211 is an equidigital number, since it uses as much as digits as its factorization.

12122202122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040734040740.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12122202122211 its reverse (11222120222121), we get a palindrome (23344322344332).

The spelling of 12122202122211 in words is "twelve trillion, one hundred twenty-two billion, two hundred two million, one hundred twenty-two thousand, two hundred eleven".