1220222020 has 24 divisors (see below), whose sum is σ = 2565964800. Its totient is φ = 487422432.

The previous prime is 1220221997. The next prime is 1220222041. The reversal of 1220222020 is 202220221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26500 + ... + 56059.

It is an arithmetic number, because the mean of its divisors is an integer number (106915200).

Almost surely, 2^1220222020 is an apocalyptic number.

1220222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220222020 is an abundant number, since it is smaller than the sum of its proper divisors (1345742780).

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

1220222020 is a wasteful number, since it uses less digits than its factorization.

1220222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83307 (or 83305 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1220222020 is about 34931.6764556183. The cubic root of 1220222020 is about 1068.5945445153.

Adding to 1220222020 its reverse (202220221), we get a palindrome (1422442241).

The spelling of 1220222020 in words is "one billion, two hundred twenty million, two hundred twenty-two thousand, twenty".