123230021021320 has 128 divisors (see below), whose sum is σ = 294753357734400. Its totient is φ = 46206963265536.

The previous prime is 123230021021297. The next prime is 123230021021323. The reversal of 123230021021320 is 23120120032321.

It is a junction number, because it is equal to n+sod(n) for n = 123230021021291 and 123230021021300.

It is not an unprimeable number, because it can be changed into a prime (123230021021323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200604082 + ... + 201217438.

It is an arithmetic number, because the mean of its divisors is an integer number (2302760607300).

Almost surely, 2^{123230021021320} is an apocalyptic number.

123230021021320 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 123230021021320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147376678867200).

123230021021320 is an abundant number, since it is smaller than the sum of its proper divisors (171523336713080).

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

123230021021320 is a wasteful number, since it uses less digits than its factorization.

123230021021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614567 (or 614563 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123230021021320 its reverse (23120120032321), we get a palindrome (146350141053641).

The spelling of 123230021021320 in words is "one hundred twenty-three trillion, two hundred thirty billion, twenty-one million, twenty-one thousand, three hundred twenty".