2121339317 has 2 divisors, whose sum is σ = 2121339318. Its totient is φ = 2121339316.

The previous prime is 2121339263. The next prime is 2121339391. The reversal of 2121339317 is 7139331212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2105066161 + 16273156 = 45881^2 + 4034^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121339317 - 2⁸ = 2121339061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121339217) 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, 1060669658 + 1060669659.

It is an arithmetic number, because the mean of its divisors is an integer number (1060669659).

Almost surely, 2^2121339317 is an apocalyptic number.

It is an amenable number.

2121339317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121339317 is an equidigital number, since it uses as much as digits as its factorization.

2121339317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 2121339317 is about 46057.9994897738. Note that the first 3 decimals coincide. The cubic root of 2121339317 is about 1284.9021241949.

The spelling of 2121339317 in words is "two billion, one hundred twenty-one million, three hundred thirty-nine thousand, three hundred seventeen".