13020020131321 has 16 divisors (see below), whose sum is σ = 14936957088768. Its totient is φ = 11117318720400.

The previous prime is 13020020131319. The next prime is 13020020131357. The reversal of 13020020131321 is 12313102002031.

It is a cyclic number.

It is not a de Polignac number, because 13020020131321 - 2¹ = 13020020131319 is a prime.

It is a super-2 number, since 2×13020020131321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13020020131361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144604206 + ... + 144694216.

It is an arithmetic number, because the mean of its divisors is an integer number (933559818048).

Almost surely, 2^{13020020131321} is an apocalyptic number.

It is an amenable number.

13020020131321 is a deficient number, since it is larger than the sum of its proper divisors (1916936957447).

13020020131321 is an equidigital number, since it uses as much as digits as its factorization.

13020020131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168852.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13020020131321 its reverse (12313102002031), we get a palindrome (25333122133352).

The spelling of 13020020131321 in words is "thirteen trillion, twenty billion, twenty million, one hundred thirty-one thousand, three hundred twenty-one".