1222012305 has 32 divisors (see below), whose sum is σ = 2194886400. Its totient is φ = 645014016.

The previous prime is 1222012301. The next prime is 1222012321. The reversal of 1222012305 is 5032102221.

It is not a de Polignac number, because 1222012305 - 2² = 1222012301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222012301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33565 + ... + 59754.

It is an arithmetic number, because the mean of its divisors is an integer number (68590200).

Almost surely, 2^1222012305 is an apocalyptic number.

1222012305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222012305 is a deficient number, since it is larger than the sum of its proper divisors (972874095).

1222012305 is an equidigital number, since it uses as much as digits as its factorization.

1222012305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93430 (or 93424 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1222012305 is about 34957.2925868123. The cubic root of 1222012305 is about 1069.1168958852.

Adding to 1222012305 its reverse (5032102221), we get a palindrome (6254114526).

The spelling of 1222012305 in words is "one billion, two hundred twenty-two million, twelve thousand, three hundred five".