126111121211 has 2 divisors, whose sum is σ = 126111121212. Its totient is φ = 126111121210.

The previous prime is 126111121207. The next prime is 126111121259. The reversal of 126111121211 is 112121111621.

It is a m-pointer prime, because the next prime (126111121259) can be obtained adding 126111121211 to its product of digits (48).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126111121211 - 2² = 126111121207 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (126111111211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63055560605 + 63055560606.

It is an arithmetic number, because the mean of its divisors is an integer number (63055560606).

Almost surely, 2^126111121211 is an apocalyptic number.

126111121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

126111121211 is an equidigital number, since it uses as much as digits as its factorization.

126111121211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 20.

Adding to 126111121211 its reverse (112121111621), we get a palindrome (238232232832).

The spelling of 126111121211 in words is "one hundred twenty-six billion, one hundred eleven million, one hundred twenty-one thousand, two hundred eleven".