215252116129 has 2 divisors, whose sum is σ = 215252116130. Its totient is φ = 215252116128.

The previous prime is 215252116039. The next prime is 215252116139. The reversal of 215252116129 is 921611252512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178138864225 + 37113251904 = 422065^2 + 192648^2 .

It is a cyclic number.

It is not a de Polignac number, because 215252116129 - 2³⁵ = 180892377761 is a prime.

It is not a weakly prime, because it can be changed into another prime (215252116139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107626058064 + 107626058065.

It is an arithmetic number, because the mean of its divisors is an integer number (107626058065).

Almost surely, 2^215252116129 is an apocalyptic number.

It is an amenable number.

215252116129 is a deficient number, since it is larger than the sum of its proper divisors (1).

215252116129 is an equidigital number, since it uses as much as digits as its factorization.

215252116129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 37.

The spelling of 215252116129 in words is "two hundred fifteen billion, two hundred fifty-two million, one hundred sixteen thousand, one hundred twenty-nine".