13102321121 has 4 divisors (see below), whose sum is σ = 13139438532. Its totient is φ = 13065203712.

The previous prime is 13102321097. The next prime is 13102321139. The reversal of 13102321121 is 12112320131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3368525521 + 9733795600 = 58039^2 + 98660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13102321121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13102321121.

It is not an unprimeable number, because it can be changed into a prime (13102321021) 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, 18558176 + ... + 18558881.

It is an arithmetic number, because the mean of its divisors is an integer number (3284859633).

Almost surely, 2^13102321121 is an apocalyptic number.

It is an amenable number.

13102321121 is a deficient number, since it is larger than the sum of its proper divisors (37117411).

13102321121 is an equidigital number, since it uses as much as digits as its factorization.

13102321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37117410.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13102321121 its reverse (12112320131), we get a palindrome (25214641252).

The spelling of 13102321121 in words is "thirteen billion, one hundred two million, three hundred twenty-one thousand, one hundred twenty-one".