1222102009 has 4 divisors (see below), whose sum is σ = 1227347316. Its totient is φ = 1216856704.

The previous prime is 1222101997. The next prime is 1222102027. The reversal of 1222102009 is 9002012221.

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 707719609 + 514382400 = 26603^2 + 22680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222102009 - 2¹⁵ = 1222069241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222102109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2622304 + ... + 2622769.

It is an arithmetic number, because the mean of its divisors is an integer number (306836829).

Almost surely, 2^1222102009 is an apocalyptic number.

It is an amenable number.

1222102009 is a deficient number, since it is larger than the sum of its proper divisors (5245307).

1222102009 is an equidigital number, since it uses as much as digits as its factorization.

1222102009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5245306.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1222102009 is about 34958.5756145756. The cubic root of 1222102009 is about 1069.1430553914.

The spelling of 1222102009 in words is "one billion, two hundred twenty-two million, one hundred two thousand, nine".