222111202211 has 4 divisors (see below), whose sum is σ = 222975448392. Its totient is φ = 221246956032.

The previous prime is 222111202207. The next prime is 222111202231. The reversal of 222111202211 is 112202111222.

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 222111202211 - 2² = 222111202207 is a prime.

It is a super-2 number, since 2×222111202211² (a number of 23 digits) contains 22 as substring.

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 222111202211.

It is not an unprimeable number, because it can be changed into a prime (222111202231) 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, 432122705 + ... + 432123218.

It is an arithmetic number, because the mean of its divisors is an integer number (55743862098).

Almost surely, 2^222111202211 is an apocalyptic number.

222111202211 is a deficient number, since it is larger than the sum of its proper divisors (864246181).

222111202211 is an equidigital number, since it uses as much as digits as its factorization.

222111202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864246180.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222111202211 its reverse (112202111222), we get a palindrome (334313313433).

The spelling of 222111202211 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred two thousand, two hundred eleven".