2003021121 has 8 divisors (see below), whose sum is σ = 2696624320. Its totient is φ = 1322382672.

The previous prime is 2003021087. The next prime is 2003021177. The reversal of 2003021121 is 1211203002.

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

It is not a de Polignac number, because 2003021121 - 2⁶ = 2003021057 is a prime.

It is a super-2 number, since 2×2003021121² = 8024187222344193282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2003021097 and 2003021106.

It is not an unprimeable number, because it can be changed into a prime (2003025121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3240826 + ... + 3241443.

It is an arithmetic number, because the mean of its divisors is an integer number (337078040).

Almost surely, 2^2003021121 is an apocalyptic number.

It is an amenable number.

2003021121 is a deficient number, since it is larger than the sum of its proper divisors (693603199).

2003021121 is a wasteful number, since it uses less digits than its factorization.

2003021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482375.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2003021121 is about 44755.1239636312. The cubic root of 2003021121 is about 1260.5551263887. Note that the first 3 decimals are identical.

Adding to 2003021121 its reverse (1211203002), we get a palindrome (3214224123).

The spelling of 2003021121 in words is "two billion, three million, twenty-one thousand, one hundred twenty-one".