13530221131 has 8 divisors (see below), whose sum is σ = 15509828864. Its totient is φ = 11562293160.

The previous prime is 13530221129. The next prime is 13530221149. The reversal of 13530221131 is 13112203531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13530221131 - 2¹ = 13530221129 is a prime.

It is a super-2 number, since 2×13530221131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530221101) 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, 2917455 + ... + 2922088.

It is an arithmetic number, because the mean of its divisors is an integer number (1938728608).

Almost surely, 2^13530221131 is an apocalyptic number.

13530221131 is a deficient number, since it is larger than the sum of its proper divisors (1979607733).

13530221131 is an equidigital number, since it uses as much as digits as its factorization.

13530221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5839881.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 13530221131 its reverse (13112203531), we get a palindrome (26642424662).

The spelling of 13530221131 in words is "thirteen billion, five hundred thirty million, two hundred twenty-one thousand, one hundred thirty-one".