13121365061 has 4 divisors (see below), whose sum is σ = 14995845792. Its totient is φ = 11246884332.

The previous prime is 13121365039. The next prime is 13121365069. The reversal of 13121365061 is 16056312131.

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 13121365061 - 2¹⁰ = 13121364037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121365069) 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, 937240355 + ... + 937240368.

It is an arithmetic number, because the mean of its divisors is an integer number (3748961448).

Almost surely, 2^13121365061 is an apocalyptic number.

It is an amenable number.

13121365061 is a deficient number, since it is larger than the sum of its proper divisors (1874480731).

13121365061 is an equidigital number, since it uses as much as digits as its factorization.

13121365061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874480730.

The product of its (nonzero) digits is 3240, while the sum is 29.

Adding to 13121365061 its reverse (16056312131), we get a palindrome (29177677192).

The spelling of 13121365061 in words is "thirteen billion, one hundred twenty-one million, three hundred sixty-five thousand, sixty-one".