12212663 has 4 divisors (see below), whose sum is σ = 12224328. Its totient is φ = 12201000.

The previous prime is 12212657. The next prime is 12212677. The reversal of 12212663 is 36621221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12212663 - 2⁸ = 12212407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4088 + ... + 6413.

It is an arithmetic number, because the mean of its divisors is an integer number (3056082).

Almost surely, 2^12212663 is an apocalyptic number.

12212663 is a deficient number, since it is larger than the sum of its proper divisors (11665).

12212663 is a wasteful number, since it uses less digits than its factorization.

12212663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11664.

The product of its digits is 864, while the sum is 23.

The square root of 12212663 is about 3494.6620723612. The cubic root of 12212663 is about 230.2873723635.

Adding to 12212663 its reverse (36621221), we get a palindrome (48833884).

It can be divided in two parts, 1221 and 2663, that multiplied together give a palindrome (3251523).

The spelling of 12212663 in words is "twelve million, two hundred twelve thousand, six hundred sixty-three".