12217283 has 4 divisors (see below), whose sum is σ = 13157088. Its totient is φ = 11277480.

The previous prime is 12217277. The next prime is 12217313. The reversal of 12217283 is 38271221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12217283 - 2⁸ = 12217027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12217783) 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, 469883 + ... + 469908.

It is an arithmetic number, because the mean of its divisors is an integer number (3289272).

Almost surely, 2^12217283 is an apocalyptic number.

12217283 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12217283 is a deficient number, since it is larger than the sum of its proper divisors (939805).

12217283 is an equidigital number, since it uses as much as digits as its factorization.

12217283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939804.

The product of its digits is 1344, while the sum is 26.

The square root of 12217283 is about 3495.3230179770. The cubic root of 12217283 is about 230.3164076233.

The spelling of 12217283 in words is "twelve million, two hundred seventeen thousand, two hundred eighty-three".