12213255 has 16 divisors (see below), whose sum is σ = 19605600. Its totient is φ = 6492288.

The previous prime is 12213251. The next prime is 12213269. The reversal of 12213255 is 55231221.

12213255 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12213255 - 2² = 12213251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4069 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (1225350).

Almost surely, 2^12213255 is an apocalyptic number.

12213255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12213255 is a deficient number, since it is larger than the sum of its proper divisors (7392345).

12213255 is a wasteful number, since it uses less digits than its factorization.

12213255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690.

The product of its digits is 600, while the sum is 21.

The square root of 12213255 is about 3494.7467719421. The cubic root of 12213255 is about 230.2910933079.

Adding to 12213255 its reverse (55231221), we get a palindrome (67444476).

The spelling of 12213255 in words is "twelve million, two hundred thirteen thousand, two hundred fifty-five".