3112212222 has 96 divisors (see below), whose sum is σ = 7790245632. Its totient is φ = 879599232.

The previous prime is 3112212209. The next prime is 3112212223. The reversal of 3112212222 is 2222122113.

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 = 3112212195 and 3112212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112212223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6664033 + ... + 6664499.

It is an arithmetic number, because the mean of its divisors is an integer number (81148392).

Almost surely, 2^3112212222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3112212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3895122816).

3112212222 is an abundant number, since it is smaller than the sum of its proper divisors (4678033410).

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

3112212222 is a wasteful number, since it uses less digits than its factorization.

3112212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 939 counting only the distinct ones).

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

The square root of 3112212222 is about 55787.2048233284. The cubic root of 3112212222 is about 1460.0119192747.

Adding to 3112212222 its reverse (2222122113), we get a palindrome (5334334335).

The spelling of 3112212222 in words is "three billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-two".