123230222020 has 72 divisors (see below), whose sum is σ = 273315299544. Its totient is φ = 46662494208.

The previous prime is 123230221987. The next prime is 123230222051. The reversal of 123230222020 is 20222032321.

It can be written as a sum of positive squares in 4 ways, for example, as 43249857156 + 79980364864 = 207966^2 + 282808^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 966222 + ... + 1086298.

It is an arithmetic number, because the mean of its divisors is an integer number (3796045827).

Almost surely, 2^123230222020 is an apocalyptic number.

123230222020 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 123230222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136657649772).

123230222020 is an abundant number, since it is smaller than the sum of its proper divisors (150085077524).

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

123230222020 is a wasteful number, since it uses less digits than its factorization.

123230222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120229 (or 120204 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 123230222020 its reverse (20222032321), we get a palindrome (143452254341).

The spelling of 123230222020 in words is "one hundred twenty-three billion, two hundred thirty million, two hundred twenty-two thousand, twenty".