12220267 has 2 divisors, whose sum is σ = 12220268. Its totient is φ = 12220266.

The previous prime is 12220261. The next prime is 12220277. The reversal of 12220267 is 76202221.

It is a weak prime.

It is an emirp because it is prime and its reverse (76202221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12220267 - 2³ = 12220259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12220261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110133 + 6110134.

It is an arithmetic number, because the mean of its divisors is an integer number (6110134).

Almost surely, 2^12220267 is an apocalyptic number.

12220267 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220267 is an equidigital number, since it uses as much as digits as its factorization.

12220267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 12220267 is about 3495.7498480297. The cubic root of 12220267 is about 230.3351572425.

Adding to 12220267 its reverse (76202221), we get a palindrome (88422488).

The spelling of 12220267 in words is "twelve million, two hundred twenty thousand, two hundred sixty-seven".