1222001209 has 8 divisors (see below), whose sum is σ = 1435637952. Its totient is φ = 1025455440.

The previous prime is 1222001203. The next prime is 1222001233. The reversal of 1222001209 is 9021002221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222001209 - 2¹¹ = 1221999161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222001203) 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, 4272589 + ... + 4272874.

It is an arithmetic number, because the mean of its divisors is an integer number (179454744).

Almost surely, 2^1222001209 is an apocalyptic number.

It is an amenable number.

1222001209 is a deficient number, since it is larger than the sum of its proper divisors (213636743).

1222001209 is a wasteful number, since it uses less digits than its factorization.

1222001209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545487.

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

The square root of 1222001209 is about 34957.1338785090. The cubic root of 1222001209 is about 1069.1136599775.

The spelling of 1222001209 in words is "one billion, two hundred twenty-two million, one thousand, two hundred nine".