12020211251 has 2 divisors, whose sum is σ = 12020211252. Its totient is φ = 12020211250.

The previous prime is 12020211227. The next prime is 12020211257. The reversal of 12020211251 is 15211202021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12020211251 - 2¹⁴ = 12020194867 is a prime.

It is not a weakly prime, because it can be changed into another prime (12020211257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010105625 + 6010105626.

It is an arithmetic number, because the mean of its divisors is an integer number (6010105626).

Almost surely, 2^12020211251 is an apocalyptic number.

12020211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020211251 is an equidigital number, since it uses as much as digits as its factorization.

12020211251 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 12020211251 its reverse (15211202021), we get a palindrome (27231413272).

The spelling of 12020211251 in words is "twelve billion, twenty million, two hundred eleven thousand, two hundred fifty-one".