3111222222 has 24 divisors (see below), whose sum is σ = 7095770760. Its totient is φ = 982491120.

The previous prime is 3111222181. The next prime is 3111222227. The reversal of 3111222222 is 2222221113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3111222195 and 3111222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111222227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4548229 + ... + 4548912.

It is an arithmetic number, because the mean of its divisors is an integer number (295657115).

Almost surely, 2^3111222222 is an apocalyptic number.

3111222222 is an abundant number, since it is smaller than the sum of its proper divisors (3984548538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3111222222 is a wasteful number, since it uses less digits than its factorization.

3111222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9097168 (or 9097165 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 3111222222 is about 55778.3311152279. The cubic root of 3111222222 is about 1459.8570920985.

Adding to 3111222222 its reverse (2222221113), we get a palindrome (5333443335).

The spelling of 3111222222 in words is "three billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".