12219255 has 48 divisors (see below), whose sum is σ = 22407840. Its totient is φ = 6386688.

The previous prime is 12219253. The next prime is 12219257. The reversal of 12219255 is 55291221.

It is an interprime number because it is at equal distance from previous prime (12219253) and next prime (12219257).

It is not a de Polignac number, because 12219255 - 2¹ = 12219253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108079 + ... + 108191.

It is an arithmetic number, because the mean of its divisors is an integer number (466830).

Almost surely, 2^12219255 is an apocalyptic number.

12219255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12219255 is a deficient number, since it is larger than the sum of its proper divisors (10188585).

12219255 is an equidigital number, since it uses as much as digits as its factorization.

12219255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 210 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 12219255 is about 3495.6050978336. The cubic root of 12219255 is about 230.3287987995.

The spelling of 12219255 in words is "twelve million, two hundred nineteen thousand, two hundred fifty-five".