122111819582447 has 2 divisors, whose sum is σ = 122111819582448. Its totient is φ = 122111819582446.

The previous prime is 122111819582437. The next prime is 122111819582491. The reversal of 122111819582447 is 744285918111221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122111819582447 - 2⁸ = 122111819582191 is a prime.

It is a super-2 number, since 2×122111819582447² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122111819582392 and 122111819582401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122111819582407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055909791223 + 61055909791224.

It is an arithmetic number, because the mean of its divisors is an integer number (61055909791224).

Almost surely, 2^{122111819582447} is an apocalyptic number.

122111819582447 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111819582447 is an equidigital number, since it uses as much as digits as its factorization.

122111819582447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 56.

The spelling of 122111819582447 in words is "one hundred twenty-two trillion, one hundred eleven billion, eight hundred nineteen million, five hundred eighty-two thousand, four hundred forty-seven".