2221122122 has 16 divisors (see below), whose sum is σ = 3461011200. Its totient is φ = 1067772720.

The previous prime is 2221122119. The next prime is 2221122139. The reversal of 2221122122 is 2212211222.

It is a happy number.

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 2221122122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66254 + ... + 93977.

It is an arithmetic number, because the mean of its divisors is an integer number (216313200).

Almost surely, 2^2221122122 is an apocalyptic number.

2221122122 is a deficient number, since it is larger than the sum of its proper divisors (1239889078).

2221122122 is a wasteful number, since it uses less digits than its factorization.

2221122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160501.

The product of its digits is 128, while the sum is 17.

The square root of 2221122122 is about 47128.7823097521. The cubic root of 2221122122 is about 1304.7405075078.

Adding to 2221122122 its reverse (2212211222), we get a palindrome (4433333344).

The spelling of 2221122122 in words is "two billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty-two".