12000020211251 has 2 divisors, whose sum is σ = 12000020211252. Its totient is φ = 12000020211250.

The previous prime is 12000020211247. The next prime is 12000020211313. The reversal of 12000020211251 is 15211202000021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12000020211251 - 2² = 12000020211247 is a prime.

It is not a weakly prime, because it can be changed into another prime (12000020216251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000010105625 + 6000010105626.

It is an arithmetic number, because the mean of its divisors is an integer number (6000010105626).

Almost surely, 2^{12000020211251} is an apocalyptic number.

12000020211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000020211251 is an equidigital number, since it uses as much as digits as its factorization.

12000020211251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 12000020211251 its reverse (15211202000021), we get a palindrome (27211222211272).

The spelling of 12000020211251 in words is "twelve trillion, twenty million, two hundred eleven thousand, two hundred fifty-one".