12220943 has 18 divisors (see below), whose sum is σ = 15119136. Its totient is φ = 9847488.

The previous prime is 12220937. The next prime is 12220951. The reversal of 12220943 is 34902221.

12220943 is nontrivially palindromic in base 3.

It is not a de Polignac number, because 12220943 - 2¹⁰ = 12219919 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 (12220903) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13730 + ... + 14592.

It is an arithmetic number, because the mean of its divisors is an integer number (839952).

Almost surely, 2^12220943 is an apocalyptic number.

12220943 is a deficient number, since it is larger than the sum of its proper divisors (2898193).

12220943 is an equidigital number, since it uses as much as digits as its factorization.

12220943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12220943 is about 3495.8465355333. The cubic root of 12220943 is about 230.3394043864.

The spelling of 12220943 in words is "twelve million, two hundred twenty thousand, nine hundred forty-three".