122555420121105 has 64 divisors (see below), whose sum is σ = 230698905166080. Its totient is φ = 61516321569792.

The previous prime is 122555420121053. The next prime is 122555420121143. The reversal of 122555420121105 is 501121024555221.

122555420121105 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 5 + 5 + 420 + 121 + 105 = 666.

It is not a de Polignac number, because 122555420121105 - 2¹¹ = 122555420119057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122555420121105.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84834442 + ... + 86266988.

It is an arithmetic number, because the mean of its divisors is an integer number (3604670393220).

Almost surely, 2^{122555420121105} is an apocalyptic number.

122555420121105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122555420121105 is a deficient number, since it is larger than the sum of its proper divisors (108143485044975).

122555420121105 is a wasteful number, since it uses less digits than its factorization.

122555420121105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469855 (or 1469849 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

Adding to 122555420121105 its reverse (501121024555221), we get a palindrome (623676444676326).

The spelling of 122555420121105 in words is "one hundred twenty-two trillion, five hundred fifty-five billion, four hundred twenty million, one hundred twenty-one thousand, one hundred five".