13121003032231 has 4 divisors (see below), whose sum is σ = 13121077610512. Its totient is φ = 13120928453952.

The previous prime is 13121003032213. The next prime is 13121003032273. The reversal of 13121003032231 is 13223030012131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13121003032231 - 2³³ = 13112413097639 is a prime.

It is a super-2 number, since 2×13121003032231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121003030231) 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, 37024611 + ... + 37377316.

It is an arithmetic number, because the mean of its divisors is an integer number (3280269402628).

Almost surely, 2^{13121003032231} is an apocalyptic number.

13121003032231 is a deficient number, since it is larger than the sum of its proper divisors (74578281).

13121003032231 is an equidigital number, since it uses as much as digits as its factorization.

13121003032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74578280.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13121003032231 its reverse (13223030012131), we get a palindrome (26344033044362).

The spelling of 13121003032231 in words is "thirteen trillion, one hundred twenty-one billion, three million, thirty-two thousand, two hundred thirty-one".