2222222211 has 24 divisors (see below), whose sum is σ = 3653934336. Its totient is φ = 1288243440.

The previous prime is 2222222137. The next prime is 2222222243. The reversal of 2222222211 is 1122222222.

2222222211 is a `hidden beast` number, since 222 + 222 + 221 + 1 = 666.

It is not a de Polignac number, because 2222222211 - 2⁹ = 2222221699 is a prime.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2222222291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 485695 + ... + 490248.

It is an arithmetic number, because the mean of its divisors is an integer number (152247264).

Almost surely, 2^2222222211 is an apocalyptic number.

2222222211 is a deficient number, since it is larger than the sum of its proper divisors (1431712125).

2222222211 is a wasteful number, since it uses less digits than its factorization.

2222222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975983 (or 975980 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 2222222211 is about 47140.4519600735. The cubic root of 2222222211 is about 1304.9558781929.

Adding to 2222222211 its reverse (1122222222), we get a palindrome (3344444433).

It can be divided in two parts, 222222221 and 1, that added together give a palindrome (222222222).

The spelling of 2222222211 in words is "two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".