2001220324 has 6 divisors (see below), whose sum is σ = 3502135574. Its totient is φ = 1000610160.

The previous prime is 2001220307. The next prime is 2001220349. The reversal of 2001220324 is 4230221002.

It can be written as a sum of positive squares in only one way, i.e., 1754101924 + 247118400 = 41882^2 + 15720^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2001220298 and 2001220307.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250152537 + ... + 250152544.

Almost surely, 2^2001220324 is an apocalyptic number.

It is an amenable number.

2001220324 is a deficient number, since it is larger than the sum of its proper divisors (1500915250).

2001220324 is a wasteful number, since it uses less digits than its factorization.

2001220324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500305085 (or 500305083 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2001220324 is about 44735.0011065161. The cubic root of 2001220324 is about 1260.1772497767.

Adding to 2001220324 its reverse (4230221002), we get a palindrome (6231441326).

The spelling of 2001220324 in words is "two billion, one million, two hundred twenty thousand, three hundred twenty-four".