12261212 has 12 divisors (see below), whose sum is σ = 21501816. Its totient is φ = 6117840.

The previous prime is 12261211. The next prime is 12261253. The reversal of 12261212 is 21216221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261211) 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, 839 + ... + 5022.

It is an arithmetic number, because the mean of its divisors is an integer number (1791818).

Almost surely, 2^12261212 is an apocalyptic number.

It is an amenable number.

12261212 is a deficient number, since it is larger than the sum of its proper divisors (9240604).

12261212 is a wasteful number, since it uses less digits than its factorization.

12261212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388 (or 6386 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 12261212 is about 3501.6013479550. The cubic root of 12261212 is about 230.5921226968.

Adding to 12261212 its reverse (21216221), we get a palindrome (33477433).

The spelling of 12261212 in words is "twelve million, two hundred sixty-one thousand, two hundred twelve".