12687101 has 4 divisors (see below), whose sum is σ = 14499552. Its totient is φ = 10874652.

The previous prime is 12687089. The next prime is 12687109. The reversal of 12687101 is 10178621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10178621 = 59 ⋅172519.

It is a cyclic number.

It is not a de Polignac number, because 12687101 - 2¹⁴ = 12670717 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 (12687109) 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, 906215 + ... + 906228.

It is an arithmetic number, because the mean of its divisors is an integer number (3624888).

Almost surely, 2^12687101 is an apocalyptic number.

It is an amenable number.

12687101 is a deficient number, since it is larger than the sum of its proper divisors (1812451).

12687101 is an equidigital number, since it uses as much as digits as its factorization.

12687101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812450.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 12687101 is about 3561.8957031334. The cubic root of 12687101 is about 233.2316398124.

The spelling of 12687101 in words is "twelve million, six hundred eighty-seven thousand, one hundred one".