122646505105 has 4 divisors (see below), whose sum is σ = 147175806132. Its totient is φ = 98117204080.

The previous prime is 122646505087. The next prime is 122646505141. The reversal of 122646505105 is 501505646221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23873958144 + 98772546961 = 154512^2 + 314281^2 .

It is not a de Polignac number, because 122646505105 - 2⁹ = 122646504593 is a prime.

It is a super-2 number, since 2×122646505105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 12264650506 + ... + 12264650515.

It is an arithmetic number, because the mean of its divisors is an integer number (36793951533).

Almost surely, 2^122646505105 is an apocalyptic number.

It is an amenable number.

122646505105 is a deficient number, since it is larger than the sum of its proper divisors (24529301027).

122646505105 is an equidigital number, since it uses as much as digits as its factorization.

122646505105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24529301026.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 122646505105 in words is "one hundred twenty-two billion, six hundred forty-six million, five hundred five thousand, one hundred five".