1000221010109 has 4 divisors (see below), whose sum is σ = 1000254260220. Its totient is φ = 1000187760000.

The previous prime is 1000221010093. The next prime is 1000221010127. The reversal of 1000221010109 is 9010101220001.

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 569425687609 + 430795322500 = 754603^2 + 656350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000221010109 - 2⁴ = 1000221010093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000221010189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16579892 + ... + 16640109.

It is an arithmetic number, because the mean of its divisors is an integer number (250063565055).

Almost surely, 2^{1000221010109} is an apocalyptic number.

It is an amenable number.

1000221010109 is a deficient number, since it is larger than the sum of its proper divisors (33250111).

1000221010109 is an equidigital number, since it uses as much as digits as its factorization.

1000221010109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33250110.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 1000221010109 in words is "one trillion, two hundred twenty-one million, ten thousand, one hundred nine".