2221122120211 has 4 divisors (see below), whose sum is σ = 2228357045992. Its totient is φ = 2213887194432.

The previous prime is 2221122120163. The next prime is 2221122120227. The reversal of 2221122120211 is 1120212211222.

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 2221122120211 - 2¹⁷ = 2221121989139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221122123211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3617462430 + ... + 3617463043.

It is an arithmetic number, because the mean of its divisors is an integer number (557089261498).

Almost surely, 2^{2221122120211} is an apocalyptic number.

2221122120211 is a deficient number, since it is larger than the sum of its proper divisors (7234925781).

2221122120211 is an equidigital number, since it uses as much as digits as its factorization.

2221122120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234925780.

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

Adding to 2221122120211 its reverse (1120212211222), we get a palindrome (3341334331433).

The spelling of 2221122120211 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred eleven".