1222110220 has 24 divisors (see below), whose sum is σ = 2602581408. Its totient is φ = 481958400.

The previous prime is 1222110209. The next prime is 1222110251. The reversal of 1222110220 is 220112221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222110220.

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, 428901 + ... + 431740.

It is an arithmetic number, because the mean of its divisors is an integer number (108440892).

Almost surely, 2^1222110220 is an apocalyptic number.

1222110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222110220 is an abundant number, since it is smaller than the sum of its proper divisors (1380471188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222110220 is a wasteful number, since it uses less digits than its factorization.

1222110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860721 (or 860719 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1222110220 is about 34958.6930533737. The cubic root of 1222110220 is about 1069.1454498216.

Adding to 1222110220 its reverse (220112221), we get a palindrome (1442222441).

The spelling of 1222110220 in words is "one billion, two hundred twenty-two million, one hundred ten thousand, two hundred twenty".