2121404003 has 2 divisors, whose sum is σ = 2121404004. Its totient is φ = 2121404002.

The previous prime is 2121403967. The next prime is 2121404053. The reversal of 2121404003 is 3004041212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121404003 - 2⁸ = 2121403747 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121404053) 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 as a sum of consecutive naturals, namely, 1060702001 + 1060702002.

It is an arithmetic number, because the mean of its divisors is an integer number (1060702002).

Almost surely, 2^2121404003 is an apocalyptic number.

2121404003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121404003 is an equidigital number, since it uses as much as digits as its factorization.

2121404003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2121404003 is about 46058.7017077121. The cubic root of 2121404003 is about 1284.9151842357.

Adding to 2121404003 its reverse (3004041212), we get a palindrome (5125445215).

The spelling of 2121404003 in words is "two billion, one hundred twenty-one million, four hundred four thousand, three".