12111893 has 2 divisors, whose sum is σ = 12111894. Its totient is φ = 12111892.

The previous prime is 12111889. The next prime is 12111899. The reversal of 12111893 is 39811121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6461764 + 5650129 = 2542^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111893 - 2² = 12111889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055946 + 6055947.

It is an arithmetic number, because the mean of its divisors is an integer number (6055947).

Almost surely, 2^12111893 is an apocalyptic number.

It is an amenable number.

12111893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111893 is an equidigital number, since it uses as much as digits as its factorization.

12111893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 26.

The square root of 12111893 is about 3480.2145048833. The cubic root of 12111893 is about 229.6522343592.

The spelling of 12111893 in words is "twelve million, one hundred eleven thousand, eight hundred ninety-three".