22221121210211 has 16 divisors (see below), whose sum is σ = 27705734926848. Its totient is φ = 17314234440000.

The previous prime is 22221121210181. The next prime is 22221121210213. The reversal of 22221121210211 is 11201212112222.

It is a cyclic number.

It is not a de Polignac number, because 22221121210211 - 2³⁰ = 22220047468387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22221121210213) 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 15 ways as a sum of consecutive naturals, for example, 6255290 + ... + 9141711.

It is an arithmetic number, because the mean of its divisors is an integer number (1731608432928).

Almost surely, 2^{22221121210211} is an apocalyptic number.

22221121210211 is a deficient number, since it is larger than the sum of its proper divisors (5484613716637).

22221121210211 is a wasteful number, since it uses less digits than its factorization.

22221121210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15415762.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22221121210211 its reverse (11201212112222), we get a palindrome (33422333322433).

The spelling of 22221121210211 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred ten thousand, two hundred eleven".