212112020211257 has 2 divisors, whose sum is σ = 212112020211258. Its totient is φ = 212112020211256.

The previous prime is 212112020211173. The next prime is 212112020211269. The reversal of 212112020211257 is 752112020211212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118549327937296 + 93562692273961 = 10888036^2 + 9672781^2 .

It is a cyclic number.

It is not a de Polignac number, because 212112020211257 - 2¹⁶ = 212112020145721 is a prime.

It is not a weakly prime, because it can be changed into another prime (212112020211457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056010105628 + 106056010105629.

It is an arithmetic number, because the mean of its divisors is an integer number (106056010105629).

Almost surely, 2^{212112020211257} is an apocalyptic number.

It is an amenable number.

212112020211257 is a deficient number, since it is larger than the sum of its proper divisors (1).

212112020211257 is an equidigital number, since it uses as much as digits as its factorization.

212112020211257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 29.

Adding to 212112020211257 its reverse (752112020211212), we get a palindrome (964224040422469).

The spelling of 212112020211257 in words is "two hundred twelve trillion, one hundred twelve billion, twenty million, two hundred eleven thousand, two hundred fifty-seven".