12201212 has 6 divisors (see below), whose sum is σ = 21352128. Its totient is φ = 6100604.

The previous prime is 12201193. The next prime is 12201229. The reversal of 12201212 is 21210221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12201193 and 12201202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1525148 + ... + 1525155.

It is an arithmetic number, because the mean of its divisors is an integer number (3558688).

Almost surely, 2^12201212 is an apocalyptic number.

It is an amenable number.

12201212 is a deficient number, since it is larger than the sum of its proper divisors (9150916).

12201212 is a wasteful number, since it uses less digits than its factorization.

12201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050307 (or 3050305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12201212 is about 3493.0233323011. The cubic root of 12201212 is about 230.2153748170.

Adding to 12201212 its reverse (21210221), we get a palindrome (33411433).

Subtracting 12201212 from its reverse (21210221), we obtain a palindrome (9009009).

The spelling of 12201212 in words is "twelve million, two hundred one thousand, two hundred twelve".