13232131121 has 4 divisors (see below), whose sum is σ = 14435052144. Its totient is φ = 12029210100.

The previous prime is 13232131117. The next prime is 13232131147. The reversal of 13232131121 is 12113123231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13232131121 - 2² = 13232131117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13232131093 and 13232131102.

It is not an unprimeable number, because it can be changed into a prime (13232131181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601460495 + ... + 601460516.

It is an arithmetic number, because the mean of its divisors is an integer number (3608763036).

Almost surely, 2^13232131121 is an apocalyptic number.

13232131121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13232131121 is a deficient number, since it is larger than the sum of its proper divisors (1202921023).

13232131121 is a wasteful number, since it uses less digits than its factorization.

13232131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202921022.

The product of its digits is 216, while the sum is 20.

Adding to 13232131121 its reverse (12113123231), we get a palindrome (25345254352).

The spelling of 13232131121 in words is "thirteen billion, two hundred thirty-two million, one hundred thirty-one thousand, one hundred twenty-one".