12222612 has 18 divisors (see below), whose sum is σ = 30896138. Its totient is φ = 4074192.

The previous prime is 12222593. The next prime is 12222629. The reversal of 12222612 is 21622221.

It can be written as a sum of positive squares in only one way, i.e., 8785296 + 3437316 = 2964^2 + 1854^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169723 + ... + 169794.

Almost surely, 2^12222612 is an apocalyptic number.

12222612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222612 is an abundant number, since it is smaller than the sum of its proper divisors (18673526).

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

12222612 is a wasteful number, since it uses less digits than its factorization.

12222612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339527 (or 339522 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 12222612 is about 3496.0852392355. The cubic root of 12222612 is about 230.3498896374.

Adding to 12222612 its reverse (21622221), we get a palindrome (33844833).

The spelling of 12222612 in words is "twelve million, two hundred twenty-two thousand, six hundred twelve".