122838961187 has 2 divisors, whose sum is σ = 122838961188. Its totient is φ = 122838961186.

The previous prime is 122838961129. The next prime is 122838961207. The reversal of 122838961187 is 781169838221.

It is a strong prime.

It is an emirp because it is prime and its reverse (781169838221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122838961187 - 2²⁰ = 122837912611 is a prime.

It is not a weakly prime, because it can be changed into another prime (122838961117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61419480593 + 61419480594.

It is an arithmetic number, because the mean of its divisors is an integer number (61419480594).

Almost surely, 2^122838961187 is an apocalyptic number.

122838961187 is a deficient number, since it is larger than the sum of its proper divisors (1).

122838961187 is an equidigital number, since it uses as much as digits as its factorization.

122838961187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 56.

The spelling of 122838961187 in words is "one hundred twenty-two billion, eight hundred thirty-eight million, nine hundred sixty-one thousand, one hundred eighty-seven".