20020120032000 has 576 divisors, whose sum is σ = 76360071191040. Its totient is φ = 4597917696000.

The previous prime is 20020120031987. The next prime is 20020120032023. The reversal of 20020120032000 is 23002102002.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19565094 + ... + 20562906.

It is an arithmetic number, because the mean of its divisors is an integer number (132569568040).

Almost surely, 2^{20020120032000} is an apocalyptic number.

20020120032000 is a gapful number since it is divisible by the number (20) 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 20020120032000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38180035595520).

20020120032000 is an abundant number, since it is smaller than the sum of its proper divisors (56339951159040).

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

20020120032000 is a wasteful number, since it uses less digits than its factorization.

20020120032000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997877 (or 997853 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20020120032000 its reverse (23002102002), we get a palindrome (20043122134002).

The spelling of 20020120032000 in words is "twenty trillion, twenty billion, one hundred twenty million, thirty-two thousand".