13231122121 has 8 divisors (see below), whose sum is σ = 15609065984. Its totient is φ = 10975124160.

The previous prime is 13231122103. The next prime is 13231122127. The reversal of 13231122121 is 12122113231.

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

It is not a de Polignac number, because 13231122121 - 2¹⁵ = 13231089353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231122127) 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, 30486240 + ... + 30486673.

It is an arithmetic number, because the mean of its divisors is an integer number (1951133248).

Almost surely, 2^13231122121 is an apocalyptic number.

It is an amenable number.

13231122121 is a deficient number, since it is larger than the sum of its proper divisors (2377943863).

13231122121 is an equidigital number, since it uses as much as digits as its factorization.

13231122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60972951.

The product of its digits is 144, while the sum is 19.

Adding to 13231122121 its reverse (12122113231), we get a palindrome (25353235352).

The spelling of 13231122121 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred twenty-one".