1220222233 has 8 divisors (see below), whose sum is σ = 1247504328. Its totient is φ = 1193097984.

The previous prime is 1220222221. The next prime is 1220222249. The reversal of 1220222233 is 3322220221.

It can be written as a sum of positive squares in 4 ways, for example, as 863654544 + 356567689 = 29388^2 + 18883^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1220222233 - 2²¹ = 1218125081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220222233.

It is not an unprimeable number, because it can be changed into a prime (1220222273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23760 + ... + 54817.

It is an arithmetic number, because the mean of its divisors is an integer number (155938041).

Almost surely, 2^1220222233 is an apocalyptic number.

It is an amenable number.

1220222233 is a deficient number, since it is larger than the sum of its proper divisors (27282095).

1220222233 is an equidigital number, since it uses as much as digits as its factorization.

1220222233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78923.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1220222233 is about 34931.6795044269. The cubic root of 1220222233 is about 1068.5946066927.

Adding to 1220222233 its reverse (3322220221), we get a palindrome (4542442454).

The spelling of 1220222233 in words is "one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred thirty-three".