123010120020 has 72 divisors (see below), whose sum is σ = 348343146144. Its totient is φ = 32434003712.

The previous prime is 123010120007. The next prime is 123010120027. The reversal of 123010120020 is 20021010321.

123010120020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 123010119978 and 123010120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123010120027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345847 + ... + 604673.

It is an arithmetic number, because the mean of its divisors is an integer number (4838099252).

Almost surely, 2^123010120020 is an apocalyptic number.

123010120020 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 123010120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174171573072).

123010120020 is an abundant number, since it is smaller than the sum of its proper divisors (225333026124).

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

123010120020 is a wasteful number, since it uses less digits than its factorization.

123010120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259017 (or 258926 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 123010120020 its reverse (20021010321), we get a palindrome (143031130341).

The spelling of 123010120020 in words is "one hundred twenty-three billion, ten million, one hundred twenty thousand, twenty".