222011122211 has 4 divisors (see below), whose sum is σ = 222348013800. Its totient is φ = 221674230624.

The previous prime is 222011122171. The next prime is 222011122219. The reversal of 222011122211 is 112221110222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222011122211 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 222011122211.

It is not an unprimeable number, because it can be changed into a prime (222011122219) 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, 168444806 + ... + 168446123.

It is an arithmetic number, because the mean of its divisors is an integer number (55587003450).

Almost surely, 2^222011122211 is an apocalyptic number.

222011122211 is a deficient number, since it is larger than the sum of its proper divisors (336891589).

222011122211 is an equidigital number, since it uses as much as digits as its factorization.

222011122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336891588.

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

Adding to 222011122211 its reverse (112221110222), we get a palindrome (334232232433).

The spelling of 222011122211 in words is "two hundred twenty-two billion, eleven million, one hundred twenty-two thousand, two hundred eleven".