1212118 has 4 divisors (see below), whose sum is σ = 1818180. Its totient is φ = 606058.

The previous prime is 1212103. The next prime is 1212119. The reversal of 1212118 is 8112121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8112121 = 883 ⋅9187.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303028 + ... + 303031.

It is an arithmetic number, because the mean of its divisors is an integer number (454545).

2^1212118 is an apocalyptic number.

1212118 is a deficient number, since it is larger than the sum of its proper divisors (606062).

1212118 is an equidigital number, since it uses as much as digits as its factorization.

1212118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606061.

The product of its digits is 32, while the sum is 16.

The square root of 1212118 is about 1100.9623063484. The cubic root of 1212118 is about 106.6223622429.

Adding to 1212118 its reverse (8112121), we get a palindrome (9324239).

The spelling of 1212118 in words is "one million, two hundred twelve thousand, one hundred eighteen".