220111221211 has 20 divisors (see below), whose sum is σ = 263044218024. Its totient is φ = 184065050400.

The previous prime is 220111221167. The next prime is 220111221251. The reversal of 220111221211 is 112122111022.

It is not a de Polignac number, because 220111221211 - 2²⁵ = 220077666779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220111221251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1019545 + ... + 1216426.

Almost surely, 2^220111221211 is an apocalyptic number.

220111221211 is a deficient number, since it is larger than the sum of its proper divisors (42932996813).

220111221211 is an frugal number, since it uses more digits than its factorization.

220111221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236040 (or 2236019 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220111221211 its reverse (112122111022), we get a palindrome (332233332233).

The spelling of 220111221211 in words is "two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, two hundred eleven".