12221269 has 8 divisors (see below), whose sum is σ = 12670848. Its totient is φ = 11779680.

The previous prime is 12221263. The next prime is 12221273. The reversal of 12221269 is 96212221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221269 - 2⁹ = 12220757 is a prime.

It is a super-2 number, since 2×12221269² = 298718831940722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209 + ... + 5089.

It is an arithmetic number, because the mean of its divisors is an integer number (1583856).

Almost surely, 2^12221269 is an apocalyptic number.

It is an amenable number.

12221269 is a deficient number, since it is larger than the sum of its proper divisors (449579).

12221269 is an equidigital number, since it uses as much as digits as its factorization.

12221269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995.

The product of its digits is 864, while the sum is 25.

The square root of 12221269 is about 3495.8931619831. The cubic root of 12221269 is about 230.3414525092.

The spelling of 12221269 in words is "twelve million, two hundred twenty-one thousand, two hundred sixty-nine".