123122105155 has 8 divisors (see below), whose sum is σ = 168853172832. Its totient is φ = 84426586368.

The previous prime is 123122105129. The next prime is 123122105177. The reversal of 123122105155 is 551501221321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123122105155 - 2⁷ = 123122105027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1758887182 + ... + 1758887251.

It is an arithmetic number, because the mean of its divisors is an integer number (21106646604).

Almost surely, 2^123122105155 is an apocalyptic number.

123122105155 is a deficient number, since it is larger than the sum of its proper divisors (45731067677).

123122105155 is an equidigital number, since it uses as much as digits as its factorization.

123122105155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517774445.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 123122105155 its reverse (551501221321), we get a palindrome (674623326476).

The spelling of 123122105155 in words is "one hundred twenty-three billion, one hundred twenty-two million, one hundred five thousand, one hundred fifty-five".