2222122222 has 12 divisors (see below), whose sum is σ = 3444176808. Its totient is φ = 1075219500.

The previous prime is 2222122171. The next prime is 2222122237. The reversal of 2222122222 is 2222212222.

2222122222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2222122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 576154 + ... + 579997.

It is an arithmetic number, because the mean of its divisors is an integer number (287014734).

Almost surely, 2^2222122222 is an apocalyptic number.

2222122222 is a deficient number, since it is larger than the sum of its proper divisors (1222054586).

2222122222 is a wasteful number, since it uses less digits than its factorization.

2222122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156215 (or 1156184 counting only the distinct ones).

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

The square root of 2222122222 is about 47139.3914046416. The cubic root of 2222122222 is about 1304.9363057143.

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

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

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

The spelling of 2222122222 in words is "two billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".