211312123207 has 2 divisors, whose sum is σ = 211312123208. Its totient is φ = 211312123206.

The previous prime is 211312123199. The next prime is 211312123223. The reversal of 211312123207 is 702321213112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211312123207 - 2³ = 211312123199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211312123247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105656061603 + 105656061604.

It is an arithmetic number, because the mean of its divisors is an integer number (105656061604).

Almost surely, 2^211312123207 is an apocalyptic number.

211312123207 is a deficient number, since it is larger than the sum of its proper divisors (1).

211312123207 is an equidigital number, since it uses as much as digits as its factorization.

211312123207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 211312123207 its reverse (702321213112), we get a palindrome (913633336319).

The spelling of 211312123207 in words is "two hundred eleven billion, three hundred twelve million, one hundred twenty-three thousand, two hundred seven".