12187011 has 16 divisors (see below), whose sum is σ = 17306784. Its totient is φ = 7601664.

The previous prime is 12187009. The next prime is 12187013. The reversal of 12187011 is 11078121.

It is an interprime number because it is at equal distance from previous prime (12187009) and next prime (12187013).

It is not a de Polignac number, because 12187011 - 2¹ = 12187009 is a prime.

It is a super-2 number, since 2×12187011² = 297046474228242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12187013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9441 + ... + 10653.

It is an arithmetic number, because the mean of its divisors is an integer number (1081674).

Almost surely, 2^12187011 is an apocalyptic number.

12187011 is a deficient number, since it is larger than the sum of its proper divisors (5119773).

12187011 is a wasteful number, since it uses less digits than its factorization.

12187011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 12187011 is about 3490.9899742050. The cubic root of 12187011 is about 230.1260241925.

The spelling of 12187011 in words is "twelve million, one hundred eighty-seven thousand, eleven".