123032110020 has 48 divisors (see below), whose sum is σ = 349341890688. Its totient is φ = 32346469120.

The previous prime is 123032109989. The next prime is 123032110021. The reversal of 123032110020 is 20011230321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (123032110021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14436129 + ... + 14444648.

It is an arithmetic number, because the mean of its divisors is an integer number (7277956056).

Almost surely, 2^123032110020 is an apocalyptic number.

123032110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123032110020 is an abundant number, since it is smaller than the sum of its proper divisors (226309780668).

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

123032110020 is a wasteful number, since it uses less digits than its factorization.

123032110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28880860 (or 28880858 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 123032110020 its reverse (20011230321), we get a palindrome (143043340341).

The spelling of 123032110020 in words is "one hundred twenty-three billion, thirty-two million, one hundred ten thousand, twenty".