1220003312 has 30 divisors (see below), whose sum is σ = 2598182664. Its totient is φ = 554546080.

The previous prime is 1220003311. The next prime is 1220003359. The reversal of 1220003312 is 2133000221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220003311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 313148 + ... + 317019.

Almost surely, 2^1220003312 is an apocalyptic number.

It is an amenable number.

1220003312 is an abundant number, since it is smaller than the sum of its proper divisors (1378179352).

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

1220003312 is a wasteful number, since it uses less digits than its factorization.

1220003312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630197 (or 630180 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1220003312 is about 34928.5458042559. The cubic root of 1220003312 is about 1068.5306970798.

Adding to 1220003312 its reverse (2133000221), we get a palindrome (3353003533).

The spelling of 1220003312 in words is "one billion, two hundred twenty million, three thousand, three hundred twelve".