12211968 has 36 divisors (see below), whose sum is σ = 32503688. Its totient is φ = 4070400.

The previous prime is 12211949. The next prime is 12211981. The reversal of 12211968 is 86911221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7183 + ... + 8718.

Almost surely, 2^12211968 is an apocalyptic number.

It is an amenable number.

12211968 is an abundant number, since it is smaller than the sum of its proper divisors (20291720).

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

12211968 is an equidigital number, since it uses as much as digits as its factorization.

12211968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15920 (or 15906 counting only the distinct ones).

The product of its digits is 1728, while the sum is 30.

The square root of 12211968 is about 3494.5626335781. The cubic root of 12211968 is about 230.2830038715.

It can be divided in two parts, 122 and 11968, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 12211968 in words is "twelve million, two hundred eleven thousand, nine hundred sixty-eight".