2130121193 has 2 divisors, whose sum is σ = 2130121194. Its totient is φ = 2130121192.

The previous prime is 2130121181. The next prime is 2130121211. The reversal of 2130121193 is 3911210312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2119957849 + 10163344 = 46043^2 + 3188^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130121193 - 2⁶ = 2130121129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2130121163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065060596 + 1065060597.

It is an arithmetic number, because the mean of its divisors is an integer number (1065060597).

Almost surely, 2^2130121193 is an apocalyptic number.

It is an amenable number.

2130121193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130121193 is an equidigital number, since it uses as much as digits as its factorization.

2130121193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2130121193 is about 46153.2359970566. The cubic root of 2130121193 is about 1286.6727533859.

The spelling of 2130121193 in words is "two billion, one hundred thirty million, one hundred twenty-one thousand, one hundred ninety-three".