20011331113320 has 64 divisors (see below), whose sum is σ = 60227028800640. Its totient is φ = 5319196256000.

The previous prime is 20011331113307. The next prime is 20011331113363. The reversal of 20011331113320 is 2331113311002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268067331 + ... + 268141970.

It is an arithmetic number, because the mean of its divisors is an integer number (941047325010).

Almost surely, 2^{20011331113320} is an apocalyptic number.

20011331113320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011331113320 is an abundant number, since it is smaller than the sum of its proper divisors (40215697687320).

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

20011331113320 is a wasteful number, since it uses less digits than its factorization.

20011331113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536209626 (or 536209622 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 20011331113320 its reverse (2331113311002), we get a palindrome (22342444424322).

The spelling of 20011331113320 in words is "twenty trillion, eleven billion, three hundred thirty-one million, one hundred thirteen thousand, three hundred twenty".