13001221501420 has 24 divisors (see below), whose sum is σ = 27327453590304. Its totient is φ = 5195747945856.

The previous prime is 13001221501399. The next prime is 13001221501423. The reversal of 13001221501420 is 2410512210031.

13001221501420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13001221501391 and 13001221501400.

It is not an unprimeable number, because it can be changed into a prime (13001221501423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296268432 + ... + 296312311.

It is an arithmetic number, because the mean of its divisors is an integer number (1138643899596).

Almost surely, 2^{13001221501420} is an apocalyptic number.

13001221501420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13001221501420 is an abundant number, since it is smaller than the sum of its proper divisors (14326232088884).

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

13001221501420 is a wasteful number, since it uses less digits than its factorization.

13001221501420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592581849 (or 592581847 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 13001221501420 its reverse (2410512210031), we get a palindrome (15411733711451).

The spelling of 13001221501420 in words is "thirteen trillion, one billion, two hundred twenty-one million, five hundred one thousand, four hundred twenty".