20331203311220 has 48 divisors (see below), whose sum is σ = 42743422612800. Its totient is φ = 8123361415680.

The previous prime is 20331203311217. The next prime is 20331203311229. The reversal of 20331203311220 is 2211330213302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331203311229) 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, 109203371 + ... + 109389389.

It is an arithmetic number, because the mean of its divisors is an integer number (890487971100).

Almost surely, 2^{20331203311220} is an apocalyptic number.

20331203311220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331203311220 is an abundant number, since it is smaller than the sum of its proper divisors (22412219301580).

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

20331203311220 is a wasteful number, since it uses less digits than its factorization.

20331203311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192128 (or 192126 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20331203311220 its reverse (2211330213302), we get a palindrome (22542533524522).

The spelling of 20331203311220 in words is "twenty trillion, three hundred thirty-one billion, two hundred three million, three hundred eleven thousand, two hundred twenty".