1165212 has 24 divisors (see below), whose sum is σ = 3021200. Its totient is φ = 388368.

The previous prime is 1165211. The next prime is 1165217. The reversal of 1165212 is 2125611.

1165212 is a `hidden beast` number, since 1 + 1 + 652 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5287 + ... + 5502.

2^1165212 is an apocalyptic number.

1165212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1165212 is an abundant number, since it is smaller than the sum of its proper divisors (1855988).

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

1165212 is a wasteful number, since it uses less digits than its factorization.

1165212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10802 (or 10794 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 1165212 is about 1079.4498598823. The cubic root of 1165212 is about 105.2288884409.

It can be divided in two parts, 11652 and 12, that added together give a square (11664 = 108²).

The spelling of 1165212 in words is "one million, one hundred sixty-five thousand, two hundred twelve".