1220302312 has 16 divisors (see below), whose sum is σ = 2288441700. Its totient is φ = 610051200.

The previous prime is 1220302309. The next prime is 1220302331. The reversal of 1220302312 is 2132030221.

It can be written as a sum of positive squares in 2 ways, for example, as 1211457636 + 8844676 = 34806^2 + 2974^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77614 + ... + 92002.

Almost surely, 2^1220302312 is an apocalyptic number.

It is an amenable number.

1220302312 is a deficient number, since it is larger than the sum of its proper divisors (1068139388).

1220302312 is a wasteful number, since it uses less digits than its factorization.

1220302312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24996 (or 24992 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1220302312 is about 34932.8257087800. The cubic root of 1220302312 is about 1068.6179822477.

Adding to 1220302312 its reverse (2132030221), we get a palindrome (3352332533).

The spelling of 1220302312 in words is "one billion, two hundred twenty million, three hundred two thousand, three hundred twelve".