1122220109 has 4 divisors (see below), whose sum is σ = 1125229116. Its totient is φ = 1119211104.

The previous prime is 1122220093. The next prime is 1122220139. The reversal of 1122220109 is 9010222211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 333172009 + 789048100 = 18253^2 + 28090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122220109 - 2⁴ = 1122220093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122220139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503944 + ... + 1504689.

It is an arithmetic number, because the mean of its divisors is an integer number (281307279).

Almost surely, 2^1122220109 is an apocalyptic number.

It is an amenable number.

1122220109 is a deficient number, since it is larger than the sum of its proper divisors (3009007).

1122220109 is an equidigital number, since it uses as much as digits as its factorization.

1122220109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009006.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1122220109 is about 33499.5538627009. The cubic root of 1122220109 is about 1039.1845521703.

The spelling of 1122220109 in words is "one billion, one hundred twenty-two million, two hundred twenty thousand, one hundred nine".