1220324512 has 48 divisors (see below), whose sum is σ = 2632543200. Its totient is φ = 552234240.

The previous prime is 1220324473. The next prime is 1220324513. The reversal of 1220324512 is 2154230221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1220324513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73039 + ... + 88177.

It is an arithmetic number, because the mean of its divisors is an integer number (54844650).

Almost surely, 2^1220324512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220324512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316271600).

1220324512 is an abundant number, since it is smaller than the sum of its proper divisors (1412218688).

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

1220324512 is a wasteful number, since it uses less digits than its factorization.

1220324512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15389 (or 15381 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1220324512 is about 34933.1434600438. The cubic root of 1220324512 is about 1068.6244623838.

Adding to 1220324512 its reverse (2154230221), we get a palindrome (3374554733).

The spelling of 1220324512 in words is "one billion, two hundred twenty million, three hundred twenty-four thousand, five hundred twelve".