13531044121 has 8 divisors (see below), whose sum is σ = 15470034944. Its totient is φ = 11593549440.

The previous prime is 13531044113. The next prime is 13531044193. The reversal of 13531044121 is 12144013531.

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 13531044121 - 2³ = 13531044113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13531044101) 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, 354585 + ... + 390886.

It is an arithmetic number, because the mean of its divisors is an integer number (1933754368).

Almost surely, 2^13531044121 is an apocalyptic number.

It is an amenable number.

13531044121 is a deficient number, since it is larger than the sum of its proper divisors (1938990823).

13531044121 is an equidigital number, since it uses as much as digits as its factorization.

13531044121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748071.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 13531044121 its reverse (12144013531), we get a palindrome (25675057652).

It can be divided in two parts, 1353104 and 4121, that added together give a square (1357225 = 1165²).

The spelling of 13531044121 in words is "thirteen billion, five hundred thirty-one million, forty-four thousand, one hundred twenty-one".