12001205251 has 8 divisors (see below), whose sum is σ = 13745679200. Its totient is φ = 10264235328.

The previous prime is 12001205221. The next prime is 12001205257. The reversal of 12001205251 is 15250210021.

12001205251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12001205251 - 2⁷ = 12001205123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001205257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872576 + ... + 1878973.

It is an arithmetic number, because the mean of its divisors is an integer number (1718209900).

Almost surely, 2^12001205251 is an apocalyptic number.

12001205251 is a deficient number, since it is larger than the sum of its proper divisors (1744473949).

12001205251 is an equidigital number, since it uses as much as digits as its factorization.

12001205251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752013.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 12001205251 its reverse (15250210021), we get a palindrome (27251415272).

The spelling of 12001205251 in words is "twelve billion, one million, two hundred five thousand, two hundred fifty-one".