12587111 has 2 divisors, whose sum is σ = 12587112. Its totient is φ = 12587110.

The previous prime is 12587087. The next prime is 12587143. The reversal of 12587111 is 11178521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12587111 - 2¹⁸ = 12324967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12581111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6293555 + 6293556.

It is an arithmetic number, because the mean of its divisors is an integer number (6293556).

Almost surely, 2^12587111 is an apocalyptic number.

12587111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12587111 is an equidigital number, since it uses as much as digits as its factorization.

12587111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 26.

The square root of 12587111 is about 3547.8318731304. The cubic root of 12587111 is about 232.6173054327.

The spelling of 12587111 in words is "twelve million, five hundred eighty-seven thousand, one hundred eleven".