2001122003 has 16 divisors (see below), whose sum is σ = 2242896480. Its totient is φ = 1776155136.

The previous prime is 2001121999. The next prime is 2001122069. The reversal of 2001122003 is 3002211002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2001122003 - 2² = 2001121999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001122083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26000 + ... + 68397.

It is an arithmetic number, because the mean of its divisors is an integer number (140181030).

Almost surely, 2^2001122003 is an apocalyptic number.

2001122003 is a deficient number, since it is larger than the sum of its proper divisors (241774477).

2001122003 is a wasteful number, since it uses less digits than its factorization.

2001122003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94486.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2001122003 is about 44733.9021660306. The cubic root of 2001122003 is about 1260.1566117165.

Adding to 2001122003 its reverse (3002211002), we get a palindrome (5003333005).

The spelling of 2001122003 in words is "two billion, one million, one hundred twenty-two thousand, three".