2003121001 has 8 divisors (see below), whose sum is σ = 2295881280. Its totient is φ = 1712010768.

The previous prime is 2003120983. The next prime is 2003121007. The reversal of 2003121001 is 1001213002.

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 2003121001 - 2¹³ = 2003112809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2003121007) 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, 409906 + ... + 414763.

It is an arithmetic number, because the mean of its divisors is an integer number (286985160).

Almost surely, 2^2003121001 is an apocalyptic number.

It is an amenable number.

2003121001 is a deficient number, since it is larger than the sum of its proper divisors (292760279).

2003121001 is an equidigital number, since it uses as much as digits as its factorization.

2003121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825023.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2003121001 is about 44756.2397996078. The cubic root of 2003121001 is about 1260.5760784316.

Adding to 2003121001 its reverse (1001213002), we get a palindrome (3004334003).

The spelling of 2003121001 in words is "two billion, three million, one hundred twenty-one thousand, one".