9911123 has 2 divisors, whose sum is σ = 9911124. Its totient is φ = 9911122.

The previous prime is 9911101. The next prime is 9911131. The reversal of 9911123 is 3211199.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9911123 - 2⁸ = 9910867 is a prime.

It is a super-2 number, since 2×9911123² = 196460718242258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9911092 and 9911101.

It is not a weakly prime, because it can be changed into another prime (9911173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955561 + 4955562.

It is an arithmetic number, because the mean of its divisors is an integer number (4955562).

Almost surely, 2^9911123 is an apocalyptic number.

9911123 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911123 is an equidigital number, since it uses as much as digits as its factorization.

9911123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 26.

The square root of 9911123 is about 3148.1936090400. The cubic root of 9911123 is about 214.8033030666.

The spelling of 9911123 in words is "nine million, nine hundred eleven thousand, one hundred twenty-three".