12451004121 has 4 divisors (see below), whose sum is σ = 16601338832. Its totient is φ = 8300669412.

The previous prime is 12451004117. The next prime is 12451004141. The reversal of 12451004121 is 12140015421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12140015421 = 3 ⋅4046671807.

It is not a de Polignac number, because 12451004121 - 2² = 12451004117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12451004141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075167351 + ... + 2075167356.

It is an arithmetic number, because the mean of its divisors is an integer number (4150334708).

Almost surely, 2^12451004121 is an apocalyptic number.

It is an amenable number.

12451004121 is a deficient number, since it is larger than the sum of its proper divisors (4150334711).

12451004121 is an equidigital number, since it uses as much as digits as its factorization.

12451004121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150334710.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 12451004121 its reverse (12140015421), we get a palindrome (24591019542).

The spelling of 12451004121 in words is "twelve billion, four hundred fifty-one million, four thousand, one hundred twenty-one".