2221123222 has 4 divisors (see below), whose sum is σ = 3331684836. Its totient is φ = 1110561610.

The previous prime is 2221123207. The next prime is 2221123241. The reversal of 2221123222 is 2223211222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2223211222 = 2 ⋅1111605611.

It is a super-2 number, since 2×2221123222² = 9866776734615322568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221123222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555280804 + ... + 555280807.

It is an arithmetic number, because the mean of its divisors is an integer number (832921209).

Almost surely, 2^2221123222 is an apocalyptic number.

2221123222 is a deficient number, since it is larger than the sum of its proper divisors (1110561614).

2221123222 is a wasteful number, since it uses less digits than its factorization.

2221123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110561613.

The product of its digits is 384, while the sum is 19.

The square root of 2221123222 is about 47128.7939799015. The cubic root of 2221123222 is about 1304.7407228966.

Adding to 2221123222 its reverse (2223211222), we get a palindrome (4444334444).

The spelling of 2221123222 in words is "two billion, two hundred twenty-one million, one hundred twenty-three thousand, two hundred twenty-two".