12121200313 has 4 divisors (see below), whose sum is σ = 12379098240. Its totient is φ = 11863302388.

The previous prime is 12121200281. The next prime is 12121200319. The reversal of 12121200313 is 31300212121.

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 12121200313 - 2⁵ = 12121200281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121200319) 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, 128948893 + ... + 128948986.

It is an arithmetic number, because the mean of its divisors is an integer number (3094774560).

Almost surely, 2^12121200313 is an apocalyptic number.

It is an amenable number.

12121200313 is a deficient number, since it is larger than the sum of its proper divisors (257897927).

12121200313 is an equidigital number, since it uses as much as digits as its factorization.

12121200313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257897926.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12121200313 its reverse (31300212121), we get a palindrome (43421412434).

The spelling of 12121200313 in words is "twelve billion, one hundred twenty-one million, two hundred thousand, three hundred thirteen".