123012320020005 has 32 divisors (see below), whose sum is σ = 212238217981440. Its totient is φ = 60480331937280.

The previous prime is 123012320019971. The next prime is 123012320020033. The reversal of 123012320020005 is 500020023210321.

It is not a de Polignac number, because 123012320020005 - 2⁴³ = 114216226997797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414327565 + ... + 414624354.

It is an arithmetic number, because the mean of its divisors is an integer number (6632444311920).

Almost surely, 2^{123012320020005} is an apocalyptic number.

123012320020005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123012320020005 is a deficient number, since it is larger than the sum of its proper divisors (89225897961435).

123012320020005 is a wasteful number, since it uses less digits than its factorization.

123012320020005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828952701.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 123012320020005 its reverse (500020023210321), we get a palindrome (623032343230326).

The spelling of 123012320020005 in words is "one hundred twenty-three trillion, twelve billion, three hundred twenty million, twenty thousand, five".