13332321020 has 24 divisors (see below), whose sum is σ = 28028645568. Its totient is φ = 5327067200.

The previous prime is 13332321007. The next prime is 13332321047. The reversal of 13332321020 is 2012323331.

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 = 13332320983 and 13332321001.

It is a congruent number.

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, 347651 + ... + 384090.

It is an arithmetic number, because the mean of its divisors is an integer number (1167860232).

Almost surely, 2^13332321020 is an apocalyptic number.

13332321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13332321020 is an abundant number, since it is smaller than the sum of its proper divisors (14696324548).

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

13332321020 is a wasteful number, since it uses less digits than its factorization.

13332321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732661 (or 732659 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13332321020 its reverse (2012323331), we get a palindrome (15344644351).

The spelling of 13332321020 in words is "thirteen billion, three hundred thirty-two million, three hundred twenty-one thousand, twenty".