1220302209 has 8 divisors (see below), whose sum is σ = 1859508160. Its totient is φ = 697315536.

The previous prime is 1220302207. The next prime is 1220302231. The reversal of 1220302209 is 9022030221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220302209 - 2¹ = 1220302207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 58109629 = 1220302209 / (1 + 2 + 2 + 0 + 3 + 0 + 2 + 2 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220302201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29054794 + ... + 29054835.

It is an arithmetic number, because the mean of its divisors is an integer number (232438520).

Almost surely, 2^1220302209 is an apocalyptic number.

It is an amenable number.

1220302209 is a deficient number, since it is larger than the sum of its proper divisors (639205951).

1220302209 is an equidigital number, since it uses as much as digits as its factorization.

1220302209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58109639.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1220302209 is about 34932.8242345219. The cubic root of 1220302209 is about 1068.6179521820.

The spelling of 1220302209 in words is "one billion, two hundred twenty million, three hundred two thousand, two hundred nine".