20004331111220 has 48 divisors (see below), whose sum is σ = 42295863052800. Its totient is φ = 7947122284416.

The previous prime is 20004331111213. The next prime is 20004331111223. The reversal of 20004331111220 is 2211113340002.

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 = 20004331111192 and 20004331111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004331111223) 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, 26033039 + ... + 26790441.

It is an arithmetic number, because the mean of its divisors is an integer number (881163813600).

Almost surely, 2^{20004331111220} is an apocalyptic number.

20004331111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20004331111220 is an abundant number, since it is smaller than the sum of its proper divisors (22291531941580).

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

20004331111220 is a wasteful number, since it uses less digits than its factorization.

20004331111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766424 (or 766422 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20004331111220 its reverse (2211113340002), we get a palindrome (22215444451222).

The spelling of 20004331111220 in words is "twenty trillion, four billion, three hundred thirty-one million, one hundred eleven thousand, two hundred twenty".