20002131213320 has 32 divisors (see below), whose sum is σ = 46961525459520. Its totient is φ = 7652989333440.

The previous prime is 20002131213289. The next prime is 20002131213377. The reversal of 20002131213320 is 2331213120002.

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 = 20002131213292 and 20002131213301.

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, 10870722566 + ... + 10870724405.

It is an arithmetic number, because the mean of its divisors is an integer number (1467547670610).

Almost surely, 2^{20002131213320} is an apocalyptic number.

20002131213320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002131213320 is an abundant number, since it is smaller than the sum of its proper divisors (26959394246200).

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

20002131213320 is a wasteful number, since it uses less digits than its factorization.

20002131213320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21741447005 (or 21741447001 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20002131213320 its reverse (2331213120002), we get a palindrome (22333344333322).

The spelling of 20002131213320 in words is "twenty trillion, two billion, one hundred thirty-one million, two hundred thirteen thousand, three hundred twenty".