1117212 has 24 divisors (see below), whose sum is σ = 2627856. Its totient is φ = 369408.

The previous prime is 1117199. The next prime is 1117243. The reversal of 1117212 is 2127111.

It is a junction number, because it is equal to n+sod(n) for n = 1117191 and 1117200.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1588 + ... + 2180.

It is an arithmetic number, because the mean of its divisors is an integer number (109494).

2^1117212 is an apocalyptic number.

1117212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1117212 is an abundant number, since it is smaller than the sum of its proper divisors (1510644).

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

1117212 is a wasteful number, since it uses less digits than its factorization.

1117212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 755 counting only the distinct ones).

The product of its digits is 28, while the sum is 15.

The square root of 1117212 is about 1056.9824974899. The cubic root of 1117212 is about 103.7636397609.

The spelling of 1117212 in words is "one million, one hundred seventeen thousand, two hundred twelve".