1212812 has 12 divisors (see below), whose sum is σ = 2134776. Its totient is φ = 602880.

The previous prime is 1212811. The next prime is 1212817. The reversal of 1212812 is 2182121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1212811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14 + ... + 1557.

It is an arithmetic number, because the mean of its divisors is an integer number (177898).

2^1212812 is an apocalyptic number.

It is an amenable number.

1212812 is a deficient number, since it is larger than the sum of its proper divisors (921964).

1212812 is a wasteful number, since it uses less digits than its factorization.

1212812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768 (or 1766 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

The square root of 1212812 is about 1101.2774400668. The cubic root of 1212812 is about 106.6427072923.

Adding to 1212812 its reverse (2182121), we get a palindrome (3394933).

The spelling of 1212812 in words is "one million, two hundred twelve thousand, eight hundred twelve".