123032021220020 has 48 divisors (see below), whose sum is σ = 282036667445568. Its totient is φ = 44710108623360.

The previous prime is 123032021220019. The next prime is 123032021220023. The reversal of 123032021220020 is 20022120230321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123032021219974 and 123032021220001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123032021220023) 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, 179708714 + ... + 180392033.

It is an arithmetic number, because the mean of its divisors is an integer number (5875763905116).

Almost surely, 2^{123032021220020} is an apocalyptic number.

123032021220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123032021220020 is an abundant number, since it is smaller than the sum of its proper divisors (159004646225548).

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

123032021220020 is a wasteful number, since it uses less digits than its factorization.

123032021220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360102320 (or 360102318 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 123032021220020 its reverse (20022120230321), we get a palindrome (143054141450341).

The spelling of 123032021220020 in words is "one hundred twenty-three trillion, thirty-two billion, twenty-one million, two hundred twenty thousand, twenty".