13331200020 has 96 divisors (see below), whose sum is σ = 38380801536. Its totient is φ = 3455308800.

The previous prime is 13331200019. The next prime is 13331200021. The reversal of 13331200020 is 2000213331.

It is an interprime number because it is at equal distance from previous prime (13331200019) and next prime (13331200021).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331200021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656662 + ... + 676658.

It is an arithmetic number, because the mean of its divisors is an integer number (399800016).

Almost surely, 2^13331200020 is an apocalyptic number.

13331200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13331200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19190400768).

13331200020 is an abundant number, since it is smaller than the sum of its proper divisors (25049601516).

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

13331200020 is a wasteful number, since it uses less digits than its factorization.

13331200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20321 (or 20319 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 13331200020 its reverse (2000213331), we get a palindrome (15331413351).

The spelling of 13331200020 in words is "thirteen billion, three hundred thirty-one million, two hundred thousand, twenty".