2121260003 has 2 divisors, whose sum is σ = 2121260004. Its totient is φ = 2121260002.

The previous prime is 2121259979. The next prime is 2121260081. The reversal of 2121260003 is 3000621212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121260003 is a prime.

It is a super-5 number, since 5×2121260003⁵ (a number of 48 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (2121260203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060630001 + 1060630002.

It is an arithmetic number, because the mean of its divisors is an integer number (1060630002).

Almost surely, 2^2121260003 is an apocalyptic number.

2121260003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121260003 is an equidigital number, since it uses as much as digits as its factorization.

2121260003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2121260003 is about 46057.1384586581. The cubic root of 2121260003 is about 1284.8861104128.

Adding to 2121260003 its reverse (3000621212), we get a palindrome (5121881215).

The spelling of 2121260003 in words is "two billion, one hundred twenty-one million, two hundred sixty thousand, three".