222120220211 has 4 divisors (see below), whose sum is σ = 222121330992. Its totient is φ = 222119109432.

The previous prime is 222120220199. The next prime is 222120220213. The reversal of 222120220211 is 112022021222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222120220211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222120220211.

It is not an unprimeable number, because it can be changed into a prime (222120220213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163055 + ... + 686168.

It is an arithmetic number, because the mean of its divisors is an integer number (55530332748).

Almost surely, 2^222120220211 is an apocalyptic number.

222120220211 is a deficient number, since it is larger than the sum of its proper divisors (1110781).

222120220211 is an equidigital number, since it uses as much as digits as its factorization.

222120220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110780.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222120220211 its reverse (112022021222), we get a palindrome (334142241433).

The spelling of 222120220211 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty thousand, two hundred eleven".