13121240299 has 4 divisors (see below), whose sum is σ = 13141334736. Its totient is φ = 13101145864.

The previous prime is 13121240257. The next prime is 13121240309. The reversal of 13121240299 is 99204212131.

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 13121240299 - 2⁹ = 13121239787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121241299) 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, 10046239 + ... + 10047544.

It is an arithmetic number, because the mean of its divisors is an integer number (3285333684).

Almost surely, 2^13121240299 is an apocalyptic number.

13121240299 is a deficient number, since it is larger than the sum of its proper divisors (20094437).

13121240299 is an equidigital number, since it uses as much as digits as its factorization.

13121240299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20094436.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 13121240299 in words is "thirteen billion, one hundred twenty-one million, two hundred forty thousand, two hundred ninety-nine".