12214845 has 18 divisors (see below), whose sum is σ = 21213114. Its totient is φ = 6502080.

The previous prime is 12214841. The next prime is 12214849. The reversal of 12214845 is 54841221.

It is an interprime number because it is at equal distance from previous prime (12214841) and next prime (12214849).

It can be written as a sum of positive squares in 3 ways, for example, as 125316 + 12089529 = 354^2 + 3477^2 .

It is not a de Polignac number, because 12214845 - 2² = 12214841 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12214841) 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 17 ways as a sum of consecutive naturals, for example, 23185 + ... + 23705.

Almost surely, 2^12214845 is an apocalyptic number.

12214845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12214845 is a deficient number, since it is larger than the sum of its proper divisors (8998269).

12214845 is an frugal number, since it uses more digits than its factorization.

12214845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 529 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 12214845 is about 3494.9742488322. The cubic root of 12214845 is about 230.3010864656.

The spelling of 12214845 in words is "twelve million, two hundred fourteen thousand, eight hundred forty-five".