1222032220 has 24 divisors (see below), whose sum is σ = 2567099808. Its totient is φ = 488654400.

The previous prime is 1222032187. The next prime is 1222032221. The reversal of 1222032220 is 222302221.

It is a junction number, because it is equal to n+sod(n) for n = 1222032194 and 1222032203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222032221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68425 + ... + 84415.

It is an arithmetic number, because the mean of its divisors is an integer number (106962492).

Almost surely, 2^1222032220 is an apocalyptic number.

1222032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222032220 is an abundant number, since it is smaller than the sum of its proper divisors (1345067588).

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

1222032220 is a wasteful number, since it uses less digits than its factorization.

1222032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19821 (or 19819 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1222032220 is about 34957.5774332261. The cubic root of 1222032220 is about 1069.1227036137.

Adding to 1222032220 its reverse (222302221), we get a palindrome (1444334441).

The spelling of 1222032220 in words is "one billion, two hundred twenty-two million, thirty-two thousand, two hundred twenty".