1099212 has 24 divisors (see below), whose sum is σ = 2587200. Its totient is φ = 363216.

The previous prime is 1099199. The next prime is 1099223. The reversal of 1099212 is 2129901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1339 + ... + 1997.

It is an arithmetic number, because the mean of its divisors is an integer number (107800).

2^1099212 is an apocalyptic number.

1099212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1099212 is an abundant number, since it is smaller than the sum of its proper divisors (1487988).

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

1099212 is a wasteful number, since it uses less digits than its factorization.

1099212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1099212 is about 1048.4331166078. The cubic root of 1099212 is about 103.2033560594.

The spelling of 1099212 in words is "one million, ninety-nine thousand, two hundred twelve".