123411130115020 has 192 divisors, whose sum is σ = 300134090793600. Its totient is φ = 42127093923840.

The previous prime is 123411130114991. The next prime is 123411130115023. The reversal of 123411130115020 is 20511031114321.

It is not an unprimeable number, because it can be changed into a prime (123411130115023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2581312876 + ... + 2581360684.

It is an arithmetic number, because the mean of its divisors is an integer number (1563198389550).

Almost surely, 2^{123411130115020} is an apocalyptic number.

123411130115020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123411130115020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150067045396800).

123411130115020 is an abundant number, since it is smaller than the sum of its proper divisors (176722960678580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123411130115020 is a wasteful number, since it uses less digits than its factorization.

123411130115020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49628 (or 49626 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 123411130115020 its reverse (20511031114321), we get a palindrome (143922161229341).

The spelling of 123411130115020 in words is "one hundred twenty-three trillion, four hundred eleven billion, one hundred thirty million, one hundred fifteen thousand, twenty".