13320021021000 has 128 divisors (see below), whose sum is σ = 41767303968000. Its totient is φ = 3534156172800.

The previous prime is 13320021020989. The next prime is 13320021021007. The reversal of 13320021021000 is 12012002331.

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

It is not an unprimeable number, because it can be changed into a prime (13320021021007) 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, 10558797 + ... + 11752796.

It is an arithmetic number, because the mean of its divisors is an integer number (326307062250).

Almost surely, 2^{13320021021000} is an apocalyptic number.

13320021021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13320021021000 is an abundant number, since it is smaller than the sum of its proper divisors (28447282947000).

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

13320021021000 is a wasteful number, since it uses less digits than its factorization.

13320021021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22311816 (or 22311802 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13320021021000 its reverse (12012002331), we get a palindrome (13332033023331).

The spelling of 13320021021000 in words is "thirteen trillion, three hundred twenty billion, twenty-one million, twenty-one thousand".