20331203213320 has 32 divisors (see below), whose sum is σ = 45749084676120. Its totient is φ = 8131791961600.

The previous prime is 20331203213257. The next prime is 20331203213371. The reversal of 20331203213320 is 2331230213302.

It can be written as a sum of positive squares in 4 ways, for example, as 9490133327236 + 10841069886084 = 3080606^2 + 3292578^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21063427 + ... + 22007506.

Almost surely, 2^{20331203213320} is an apocalyptic number.

20331203213320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331203213320 is an abundant number, since it is smaller than the sum of its proper divisors (25417881462800).

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

20331203213320 is a wasteful number, since it uses less digits than its factorization.

20331203213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43082745 (or 43082741 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20331203213320 its reverse (2331230213302), we get a palindrome (22662433426622).

The spelling of 20331203213320 in words is "twenty trillion, three hundred thirty-one billion, two hundred three million, two hundred thirteen thousand, three hundred twenty".