11491212 has 12 divisors (see below), whose sum is σ = 26812856. Its totient is φ = 3830400.

The previous prime is 11491199. The next prime is 11491217. The reversal of 11491212 is 21219411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (11491217) 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, 478789 + ... + 478812.

Almost surely, 2^11491212 is an apocalyptic number.

11491212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11491212 is an abundant number, since it is smaller than the sum of its proper divisors (15321644).

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

11491212 is a wasteful number, since it uses less digits than its factorization.

11491212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957608 (or 957606 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

The square root of 11491212 is about 3389.8690240185. The cubic root of 11491212 is about 225.6603612188.

The spelling of 11491212 in words is "eleven million, four hundred ninety-one thousand, two hundred twelve".