12230155 has 12 divisors (see below), whose sum is σ = 17072640. Its totient is φ = 8386224.

The previous prime is 12230149. The next prime is 12230161. The reversal of 12230155 is 55103221.

It is an interprime number because it is at equal distance from previous prime (12230149) and next prime (12230161).

It is a de Polignac number, because none of the positive numbers 2^k-12230155 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 24715 + ... + 25204.

It is an arithmetic number, because the mean of its divisors is an integer number (1422720).

Almost surely, 2^12230155 is an apocalyptic number.

12230155 is a deficient number, since it is larger than the sum of its proper divisors (4842485).

12230155 is an equidigital number, since it uses as much as digits as its factorization.

12230155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49938 (or 49931 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12230155 is about 3497.1638508940. The cubic root of 12230155 is about 230.3972655423.

Adding to 12230155 its reverse (55103221), we get a palindrome (67333376).

The spelling of 12230155 in words is "twelve million, two hundred thirty thousand, one hundred fifty-five".