20000220120020 has 192 divisors, whose sum is σ = 50073673875456. Its totient is φ = 6568165739520.

The previous prime is 20000220119993. The next prime is 20000220120043. The reversal of 20000220120020 is 2002102200002.

It is a junction number, because it is equal to n+sod(n) for n = 20000220119983 and 20000220120010.

It is a congruent number.

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, 89833640 + ... + 90056000.

It is an arithmetic number, because the mean of its divisors is an integer number (260800384768).

Almost surely, 2^{20000220120020} is an apocalyptic number.

20000220120020 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 20000220120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25036836937728).

20000220120020 is an abundant number, since it is smaller than the sum of its proper divisors (30073453755436).

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

20000220120020 is a wasteful number, since it uses less digits than its factorization.

20000220120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222710 (or 222708 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20000220120020 its reverse (2002102200002), we get a palindrome (22002322320022).

The spelling of 20000220120020 in words is "twenty trillion, two hundred twenty million, one hundred twenty thousand, twenty".