1131212 has 12 divisors (see below), whose sum is σ = 1987440. Its totient is φ = 563376.

The previous prime is 1131191. The next prime is 1131217. The reversal of 1131212 is 2121311.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1131193 and 1131202.

It is not an unprimeable number, because it can be changed into a prime (1131217) 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, 1193 + ... + 1919.

It is an arithmetic number, because the mean of its divisors is an integer number (165620).

2^1131212 is an apocalyptic number.

It is an amenable number.

1131212 is a deficient number, since it is larger than the sum of its proper divisors (856228).

1131212 is a wasteful number, since it uses less digits than its factorization.

1131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1118 counting only the distinct ones).

The product of its digits is 12, while the sum is 11.

The square root of 1131212 is about 1063.5845053403. The cubic root of 1131212 is about 104.1952692299.

Adding to 1131212 its reverse (2121311), we get a palindrome (3252523).

Subtracting 1131212 from its reverse (2121311), we obtain a palindrome (990099).

The spelling of 1131212 in words is "one million, one hundred thirty-one thousand, two hundred twelve".