1001022212209 has 4 divisors (see below), whose sum is σ = 1001026170100. Its totient is φ = 1001018254320.

The previous prime is 1001022212159. The next prime is 1001022212249. The reversal of 1001022212209 is 9022122201001.

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 546438816225 + 454583395984 = 739215^2 + 674228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001022212209 - 2⁷ = 1001022212081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001022212209.

It is not an unprimeable number, because it can be changed into a prime (1001022212249) 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, 1571622 + ... + 2114719.

It is an arithmetic number, because the mean of its divisors is an integer number (250256542525).

Almost surely, 2^{1001022212209} is an apocalyptic number.

It is an amenable number.

1001022212209 is a deficient number, since it is larger than the sum of its proper divisors (3957891).

1001022212209 is an equidigital number, since it uses as much as digits as its factorization.

1001022212209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957890.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 1001022212209 in words is "one trillion, one billion, twenty-two million, two hundred twelve thousand, two hundred nine".