1099219812 has 24 divisors (see below), whose sum is σ = 2577871296. Its totient is φ = 364545888.

The previous prime is 1099219801. The next prime is 1099219829. The reversal of 1099219812 is 2189129901.

It is an unprimeable number.

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, 230128 + ... + 234855.

It is an arithmetic number, because the mean of its divisors is an integer number (107411304).

Almost surely, 2^1099219812 is an apocalyptic number.

1099219812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1099219812 is an abundant number, since it is smaller than the sum of its proper divisors (1478651484).

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

1099219812 is a wasteful number, since it uses less digits than its factorization.

1099219812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465187 (or 465185 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 1099219812 is about 33154.4840406241. The cubic root of 1099219812 is about 1032.0360054441.

The spelling of 1099219812 in words is "one billion, ninety-nine million, two hundred nineteen thousand, eight hundred twelve".