2001122008 has 16 divisors (see below), whose sum is σ = 3831936480. Its totient is φ = 979272288.

The previous prime is 2001121999. The next prime is 2001122069. The reversal of 2001122008 is 8002211002.

It is a junction number, because it is equal to n+sod(n) for n = 2001121982 and 2001122000.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2660691 + ... + 2661442.

It is an arithmetic number, because the mean of its divisors is an integer number (239496030).

Almost surely, 2^2001122008 is an apocalyptic number.

It is an amenable number.

2001122008 is a deficient number, since it is larger than the sum of its proper divisors (1830814472).

2001122008 is a wasteful number, since it uses less digits than its factorization.

2001122008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322186 (or 5322182 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2001122008 is about 44733.9022219167. The cubic root of 2001122008 is about 1260.1566127660.

The spelling of 2001122008 in words is "two billion, one million, one hundred twenty-two thousand, eight".