123012320020105 has 8 divisors (see below), whose sum is σ = 147615011619264. Its totient is φ = 98409704286000.

The previous prime is 123012320020033. The next prime is 123012320020171. The reversal of 123012320020105 is 501020023210321.

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

It is a de Polignac number, because none of the positive numbers 2^k-123012320020105 is a prime.

It is a super-2 number, since 2×123012320020105² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15335871 + ... + 21936580.

It is an arithmetic number, because the mean of its divisors is an integer number (18451876452408).

Almost surely, 2^{123012320020105} is an apocalyptic number.

It is an amenable number.

123012320020105 is a deficient number, since it is larger than the sum of its proper divisors (24602691599159).

123012320020105 is an equidigital number, since it uses as much as digits as its factorization.

123012320020105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37932527.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 123012320020105 its reverse (501020023210321), we get a palindrome (624032343230426).

The spelling of 123012320020105 in words is "one hundred twenty-three trillion, twelve billion, three hundred twenty million, twenty thousand, one hundred five".