12211385 has 8 divisors (see below), whose sum is σ = 14696640. Its totient is φ = 9740464.

The previous prime is 12211373. The next prime is 12211387. The reversal of 12211385 is 58311221.

It is a happy number.

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 12211385 - 2¹⁶ = 12145849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12211385.

It is not an unprimeable number, because it can be changed into a prime (12211387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1607 + ... + 5196.

It is an arithmetic number, because the mean of its divisors is an integer number (1837080).

Almost surely, 2^12211385 is an apocalyptic number.

It is an amenable number.

12211385 is a deficient number, since it is larger than the sum of its proper divisors (2485255).

12211385 is an equidigital number, since it uses as much as digits as its factorization.

12211385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167.

The product of its digits is 480, while the sum is 23.

The square root of 12211385 is about 3494.4792172797. The cubic root of 12211385 is about 230.2793392389.

The spelling of 12211385 in words is "twelve million, two hundred eleven thousand, three hundred eighty-five".