11681212 has 6 divisors (see below), whose sum is σ = 20442128. Its totient is φ = 5840604.

The previous prime is 11681191. The next prime is 11681213. The reversal of 11681212 is 21218611.

11681212 is a modest number, since divided by 1212 gives 1168 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460148 + ... + 1460155.

Almost surely, 2^11681212 is an apocalyptic number.

It is an amenable number.

11681212 is a deficient number, since it is larger than the sum of its proper divisors (8760916).

11681212 is a wasteful number, since it uses less digits than its factorization.

11681212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920307 (or 2920305 counting only the distinct ones).

The product of its digits is 192, while the sum is 22.

The square root of 11681212 is about 3417.7788108653. The cubic root of 11681212 is about 226.8972864243.

Adding to 11681212 its reverse (21218611), we get a palindrome (32899823).

The spelling of 11681212 in words is "eleven million, six hundred eighty-one thousand, two hundred twelve".