12233661 has 16 divisors (see below), whose sum is σ = 17858880. Its totient is φ = 7387520.

The previous prime is 12233657. The next prime is 12233681. The reversal of 12233661 is 16633221.

It is a happy number.

12233661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12233661 - 2² = 12233657 is a prime.

It is a super-2 number, since 2×12233661² = 299324922925842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12233651) 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, 12361 + ... + 13313.

It is an arithmetic number, because the mean of its divisors is an integer number (1116180).

Almost surely, 2^12233661 is an apocalyptic number.

12233661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12233661 is a deficient number, since it is larger than the sum of its proper divisors (5625219).

12233661 is a wasteful number, since it uses less digits than its factorization.

12233661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its digits is 1296, while the sum is 24.

The square root of 12233661 is about 3497.6650783058. The cubic root of 12233661 is about 230.4192793172.

Adding to 12233661 its reverse (16633221), we get a palindrome (28866882).

It can be divided in two parts, 1223 and 3661, that added together give a palindrome (4884).

The spelling of 12233661 in words is "twelve million, two hundred thirty-three thousand, six hundred sixty-one".