2001223208 has 8 divisors (see below), whose sum is σ = 3752293530. Its totient is φ = 1000611600.

The previous prime is 2001223207. The next prime is 2001223229. The reversal of 2001223208 is 8023221002.

It can be written as a sum of positive squares in only one way, i.e., 1949928964 + 51294244 = 44158^2 + 7162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2001223208² = 8009788656475622528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2001223208.

It is not an unprimeable number, because it can be changed into a prime (2001223207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125076443 + ... + 125076458.

Almost surely, 2^2001223208 is an apocalyptic number.

It is an amenable number.

2001223208 is a deficient number, since it is larger than the sum of its proper divisors (1751070322).

2001223208 is a wasteful number, since it uses less digits than its factorization.

2001223208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250152907 (or 250152903 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2001223208 is about 44735.0333407722. The cubic root of 2001223208 is about 1260.1778551322.

The spelling of 2001223208 in words is "two billion, one million, two hundred twenty-three thousand, two hundred eight".