13321001023020 has 96 divisors (see below), whose sum is σ = 42779989002240. Its totient is φ = 3437677679040.

The previous prime is 13321001022883. The next prime is 13321001023021. The reversal of 13321001023020 is 2032010012331.

13321001023020 is a `hidden beast` number, since 1 + 332 + 100 + 1 + 0 + 230 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13321001022984 and 13321001023002.

It is not an unprimeable number, because it can be changed into a prime (13321001023021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397862622 + ... + 397896101.

It is an arithmetic number, because the mean of its divisors is an integer number (445624885440).

Almost surely, 2^{13321001023020} is an apocalyptic number.

13321001023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321001023020 is an abundant number, since it is smaller than the sum of its proper divisors (29458987979220).

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

13321001023020 is a wasteful number, since it uses less digits than its factorization.

13321001023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795758772 (or 795758764 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13321001023020 its reverse (2032010012331), we get a palindrome (15353011035351).

The spelling of 13321001023020 in words is "thirteen trillion, three hundred twenty-one billion, one million, twenty-three thousand, twenty".