12011123 has 2 divisors, whose sum is σ = 12011124. Its totient is φ = 12011122.

The previous prime is 12011117. The next prime is 12011143. The reversal of 12011123 is 32111021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12011123 - 2¹² = 12007027 is a prime.

It is a super-2 number, since 2×12011123² = 288534151442258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12011113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005561 + 6005562.

It is an arithmetic number, because the mean of its divisors is an integer number (6005562).

Almost surely, 2^12011123 is an apocalyptic number.

12011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011123 is an equidigital number, since it uses as much as digits as its factorization.

12011123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 12011123 is about 3465.7067100377. The cubic root of 12011123 is about 229.0135636468.

Adding to 12011123 its reverse (32111021), we get a palindrome (44122144).

The spelling of 12011123 in words is "twelve million, eleven thousand, one hundred twenty-three".