2221112220211 has 16 divisors (see below), whose sum is σ = 2470094323200. Its totient is φ = 1988425883808.

The previous prime is 2221112220203. The next prime is 2221112220227. The reversal of 2221112220211 is 1120222111222.

It is a cyclic number.

It is not a de Polignac number, because 2221112220211 - 2³ = 2221112220203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221112220251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42857685 + ... + 42909478.

It is an arithmetic number, because the mean of its divisors is an integer number (154380895200).

Almost surely, 2^{2221112220211} is an apocalyptic number.

2221112220211 is a deficient number, since it is larger than the sum of its proper divisors (248982102989).

2221112220211 is a wasteful number, since it uses less digits than its factorization.

2221112220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85767258.

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

Adding to 2221112220211 its reverse (1120222111222), we get a palindrome (3341334331433).

The spelling of 2221112220211 in words is "two trillion, two hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, two hundred eleven".