122542550279 has 2 divisors, whose sum is σ = 122542550280. Its totient is φ = 122542550278.

The previous prime is 122542550239. The next prime is 122542550297. The reversal of 122542550279 is 972055245221.

Together with next prime (122542550297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122542550279 - 2⁸ = 122542550023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122542550239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61271275139 + 61271275140.

It is an arithmetic number, because the mean of its divisors is an integer number (61271275140).

Almost surely, 2^122542550279 is an apocalyptic number.

122542550279 is a deficient number, since it is larger than the sum of its proper divisors (1).

122542550279 is an equidigital number, since it uses as much as digits as its factorization.

122542550279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 122542550279 in words is "one hundred twenty-two billion, five hundred forty-two million, five hundred fifty thousand, two hundred seventy-nine".