1311212 has 12 divisors (see below), whose sum is σ = 2622480. Its totient is φ = 561936.

The previous prime is 1311181. The next prime is 1311217. The reversal of 1311212 is 2121131.

1311212 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1311193 and 1311202.

It is not an unprimeable number, because it can be changed into a prime (1311217) 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, 23387 + ... + 23442.

It is an arithmetic number, because the mean of its divisors is an integer number (218540).

2^1311212 is an apocalyptic number.

It is an amenable number.

1311212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1311212 is a wasteful number, since it uses less digits than its factorization.

1311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46840 (or 46838 counting only the distinct ones).

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

The square root of 1311212 is about 1145.0816564770. The cubic root of 1311212 is about 109.4521520411.

Adding to 1311212 its reverse (2121131), we get a palindrome (3432343).

The spelling of 1311212 in words is "one million, three hundred eleven thousand, two hundred twelve".