9911237123 has 2 divisors, whose sum is σ = 9911237124. Its totient is φ = 9911237122.

The previous prime is 9911237093. The next prime is 9911237183. The reversal of 9911237123 is 3217321199.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9911237123 - 2¹⁶ = 9911171587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9911237183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955618561 + 4955618562.

It is an arithmetic number, because the mean of its divisors is an integer number (4955618562).

Almost surely, 2^9911237123 is an apocalyptic number.

9911237123 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911237123 is an equidigital number, since it uses as much as digits as its factorization.

9911237123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 9911237123 is about 99555.1963636253. The cubic root of 9911237123 is about 2148.0412752427.

The spelling of 9911237123 in words is "nine billion, nine hundred eleven million, two hundred thirty-seven thousand, one hundred twenty-three".