12212671 has 4 divisors (see below), whose sum is σ = 12219832. Its totient is φ = 12205512.

The previous prime is 12212657. The next prime is 12212677. The reversal of 12212671 is 17621221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12212671 - 2⁹ = 12212159 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 (12212677) 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, 625 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (3054958).

Almost surely, 2^12212671 is an apocalyptic number.

12212671 is a deficient number, since it is larger than the sum of its proper divisors (7161).

12212671 is an equidigital number, since it uses as much as digits as its factorization.

12212671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160.

The product of its digits is 336, while the sum is 22.

The square root of 12212671 is about 3494.6632169638. The cubic root of 12212671 is about 230.2874226473.

Adding to 12212671 its reverse (17621221), we get a palindrome (29833892).

The spelling of 12212671 in words is "twelve million, two hundred twelve thousand, six hundred seventy-one".