2001212003 has 8 divisors (see below), whose sum is σ = 2287702272. Its totient is φ = 1714872456.

The previous prime is 2001211981. The next prime is 2001212021. The reversal of 2001212003 is 3002121002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001212003 - 2⁶ = 2001211939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001212093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7625 + ... + 63722.

It is an arithmetic number, because the mean of its divisors is an integer number (285962784).

Almost surely, 2^2001212003 is an apocalyptic number.

2001212003 is a deficient number, since it is larger than the sum of its proper divisors (286490269).

2001212003 is an equidigital number, since it uses as much as digits as its factorization.

2001212003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75361.

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

The square root of 2001212003 is about 44734.9081031805. The cubic root of 2001212003 is about 1260.1755031841.

Adding to 2001212003 its reverse (3002121002), we get a palindrome (5003333005).

The spelling of 2001212003 in words is "two billion, one million, two hundred twelve thousand, three".