1000222001209 has 4 divisors (see below), whose sum is σ = 1000240941604. Its totient is φ = 1000203060816.

The previous prime is 1000222001197. The next prime is 1000222001227. The reversal of 1000222001209 is 9021002220001.

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 495735687225 + 504486313984 = 704085^2 + 710272^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000222001209 - 2⁹ = 1000222000697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000222001609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9390762 + ... + 9496675.

It is an arithmetic number, because the mean of its divisors is an integer number (250060235401).

Almost surely, 2^{1000222001209} is an apocalyptic number.

It is an amenable number.

1000222001209 is a deficient number, since it is larger than the sum of its proper divisors (18940395).

1000222001209 is an equidigital number, since it uses as much as digits as its factorization.

1000222001209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18940394.

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

The spelling of 1000222001209 in words is "one trillion, two hundred twenty-two million, one thousand, two hundred nine".