12906211 has 4 divisors (see below), whose sum is σ = 12962800. Its totient is φ = 12849624.

The previous prime is 12906193. The next prime is 12906221. The reversal of 12906211 is 11260921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11260921 = 7 ⋅1608703.

It is a cyclic number.

It is not a de Polignac number, because 12906211 - 2⁹ = 12905699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12906221) 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, 27951 + ... + 28408.

It is an arithmetic number, because the mean of its divisors is an integer number (3240700).

Almost surely, 2^12906211 is an apocalyptic number.

12906211 is a deficient number, since it is larger than the sum of its proper divisors (56589).

12906211 is an equidigital number, since it uses as much as digits as its factorization.

12906211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56588.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 12906211 is about 3592.5215378617. The cubic root of 12906211 is about 234.5666436335.

The spelling of 12906211 in words is "twelve million, nine hundred six thousand, two hundred eleven".