12153222 has 12 divisors (see below), whose sum is σ = 26332020. Its totient is φ = 4051068.

The previous prime is 12153221. The next prime is 12153247. The reversal of 12153222 is 22235121.

12153222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 675179 = 12153222 / (1 + 2 + 1 + 5 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 12153195 and 12153204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12153221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 337572 + ... + 337607.

It is an arithmetic number, because the mean of its divisors is an integer number (2194335).

Almost surely, 2^12153222 is an apocalyptic number.

12153222 is an abundant number, since it is smaller than the sum of its proper divisors (14178798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12153222 is a wasteful number, since it uses less digits than its factorization.

12153222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675187 (or 675184 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 12153222 is about 3486.1471569628. The cubic root of 12153222 is about 229.9131493129.

Adding to 12153222 its reverse (22235121), we get a palindrome (34388343).

The spelling of 12153222 in words is "twelve million, one hundred fifty-three thousand, two hundred twenty-two".