2001122004 has 48 divisors (see below), whose sum is σ = 5351270400. Its totient is φ = 570147936.

The previous prime is 2001121999. The next prime is 2001122069. The reversal of 2001122004 is 4002211002.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 15 ways as a sum of consecutive naturals, for example, 3024 + ... + 63335.

It is an arithmetic number, because the mean of its divisors is an integer number (111484800).

Almost surely, 2^2001122004 is an apocalyptic number.

It is an amenable number.

2001122004 is an abundant number, since it is smaller than the sum of its proper divisors (3350148396).

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

2001122004 is a wasteful number, since it uses less digits than its factorization.

2001122004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66732 (or 66730 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2001122004 is about 44733.9021772078. The cubic root of 2001122004 is about 1260.1566119264.

Adding to 2001122004 its reverse (4002211002), we get a palindrome (6003333006).

The spelling of 2001122004 in words is "two billion, one million, one hundred twenty-two thousand, four".