2222212222 has 32 divisors (see below), whose sum is σ = 3801600000. Its totient is φ = 967655808.

The previous prime is 2222212211. The next prime is 2222212243. The reversal of 2222212222 is 2222122222.

It is a Harshad number since it is a multiple of its sum of digits (19).

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

It is a self number, because there is not a number n which added to its sum of digits gives 2222212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12222 + ... + 67777.

It is an arithmetic number, because the mean of its divisors is an integer number (118800000).

Almost surely, 2^2222212222 is an apocalyptic number.

2222212222 is a deficient number, since it is larger than the sum of its proper divisors (1579387778).

2222212222 is a wasteful number, since it uses less digits than its factorization.

2222212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80080.

The product of its digits is 512, while the sum is 19.

The square root of 2222212222 is about 47140.3460106096. The cubic root of 2222212222 is about 1304.9539229094.

Adding to 2222212222 its reverse (2222122222), we get a palindrome (4444334444).

Subtracting from 2222212222 its reverse (2222122222), we obtain a square (90000 = 300²).

It can be divided in two parts, 2 and 222212222, that multiplied together give a palindrome (444424444).

The spelling of 2222212222 in words is "two billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".