2121103169 has 2 divisors, whose sum is σ = 2121103170. Its totient is φ = 2121103168.

The previous prime is 2121103157. The next prime is 2121103207. The reversal of 2121103169 is 9613011212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1454430769 + 666672400 = 38137^2 + 25820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121103169 - 2²⁰ = 2120054593 is a prime.

It is a super-2 number, since 2×2121103169² = 8998157307083685122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2121103139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060551584 + 1060551585.

It is an arithmetic number, because the mean of its divisors is an integer number (1060551585).

Almost surely, 2^2121103169 is an apocalyptic number.

It is an amenable number.

2121103169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121103169 is an equidigital number, since it uses as much as digits as its factorization.

2121103169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2121103169 is about 46055.4358246668. The cubic root of 2121103169 is about 1284.8544438884.

The spelling of 2121103169 in words is "two billion, one hundred twenty-one million, one hundred three thousand, one hundred sixty-nine".