1220009316 has 24 divisors (see below), whose sum is σ = 2894939040. Its totient is φ = 399776832.

The previous prime is 1220009311. The next prime is 1220009317. The reversal of 1220009316 is 6139000221.

It is a super-2 number, since 2×1220009316² = 2976845462253575712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220009311) 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, 860881 + ... + 862296.

It is an arithmetic number, because the mean of its divisors is an integer number (120622460).

Almost surely, 2^1220009316 is an apocalyptic number.

It is an amenable number.

1220009316 is an abundant number, since it is smaller than the sum of its proper divisors (1674929724).

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

1220009316 is a wasteful number, since it uses less digits than its factorization.

1220009316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723243 (or 1723241 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1220009316 is about 34928.6317510434. The cubic root of 1220009316 is about 1068.5324499296.

Adding to 1220009316 its reverse (6139000221), we get a palindrome (7359009537).

The spelling of 1220009316 in words is "one billion, two hundred twenty million, nine thousand, three hundred sixteen".