1222221122 has 8 divisors (see below), whose sum is σ = 1859153472. Its totient is φ = 602503300.

The previous prime is 1222221109. The next prime is 1222221139. The reversal of 1222221122 is 2211222221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 1222221122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4303454 + ... + 4303737.

It is an arithmetic number, because the mean of its divisors is an integer number (232394184).

Almost surely, 2^1222221122 is an apocalyptic number.

1222221122 is a deficient number, since it is larger than the sum of its proper divisors (636932350).

1222221122 is an equidigital number, since it uses as much as digits as its factorization.

1222221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607264.

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

The square root of 1222221122 is about 34960.2792036906. The cubic root of 1222221122 is about 1069.1777891803.

Adding to 1222221122 its reverse (2211222221), we get a palindrome (3433443343).

The spelling of 1222221122 in words is "one billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".