12271087 has 4 divisors (see below), whose sum is σ = 12602776. Its totient is φ = 11939400.

The previous prime is 12271079. The next prime is 12271099. The reversal of 12271087 is 78017221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78017221 = 29 ⋅2690249.

It is a cyclic number.

It is not a de Polignac number, because 12271087 - 2³ = 12271079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165789 + ... + 165862.

It is an arithmetic number, because the mean of its divisors is an integer number (3150694).

Almost surely, 2^12271087 is an apocalyptic number.

12271087 is a deficient number, since it is larger than the sum of its proper divisors (331689).

12271087 is an equidigital number, since it uses as much as digits as its factorization.

12271087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331688.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 12271087 is about 3503.0111332966. The cubic root of 12271087 is about 230.6540112543.

The spelling of 12271087 in words is "twelve million, two hundred seventy-one thousand, eighty-seven".