2003560121 has 2 divisors, whose sum is σ = 2003560122. Its totient is φ = 2003560120.

The previous prime is 2003560099. The next prime is 2003560171. The reversal of 2003560121 is 1210653002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1930372096 + 73188025 = 43936^2 + 8555^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003560121 - 2⁶ = 2003560057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2003560093 and 2003560102.

It is not a weakly prime, because it can be changed into another prime (2003560171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001780060 + 1001780061.

It is an arithmetic number, because the mean of its divisors is an integer number (1001780061).

Almost surely, 2^2003560121 is an apocalyptic number.

It is an amenable number.

2003560121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003560121 is an equidigital number, since it uses as much as digits as its factorization.

2003560121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2003560121 is about 44761.1452154656. The cubic root of 2003560121 is about 1260.6681853193.

The spelling of 2003560121 in words is "two billion, three million, five hundred sixty thousand, one hundred twenty-one".