126111111211 has 2 divisors, whose sum is σ = 126111111212. Its totient is φ = 126111111210.

The previous prime is 126111111209. The next prime is 126111111277. The reversal of 126111111211 is 112111111621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126111111211 - 2¹ = 126111111209 is a prime.

Together with 126111111209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126111111011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63055555605 + 63055555606.

It is an arithmetic number, because the mean of its divisors is an integer number (63055555606).

Almost surely, 2^126111111211 is an apocalyptic number.

126111111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

126111111211 is an equidigital number, since it uses as much as digits as its factorization.

126111111211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 19.

Adding to 126111111211 its reverse (112111111621), we get a palindrome (238222222832).

The spelling of 126111111211 in words is "one hundred twenty-six billion, one hundred eleven million, one hundred eleven thousand, two hundred eleven".