122128539523187 has 2 divisors, whose sum is σ = 122128539523188. Its totient is φ = 122128539523186.

The previous prime is 122128539523171. The next prime is 122128539523213. The reversal of 122128539523187 is 781325935821221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122128539523187 - 2⁴ = 122128539523171 is a prime.

It is not a weakly prime, because it can be changed into another prime (122128539523157) 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, 61064269761593 + 61064269761594.

It is an arithmetic number, because the mean of its divisors is an integer number (61064269761594).

Almost surely, 2^{122128539523187} is an apocalyptic number.

122128539523187 is a deficient number, since it is larger than the sum of its proper divisors (1).

122128539523187 is an equidigital number, since it uses as much as digits as its factorization.

122128539523187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 59.

The spelling of 122128539523187 in words is "one hundred twenty-two trillion, one hundred twenty-eight billion, five hundred thirty-nine million, five hundred twenty-three thousand, one hundred eighty-seven".