10122221002009 has 4 divisors (see below), whose sum is σ = 10190155371300. Its totient is φ = 10054286632720.

The previous prime is 10122221001973. The next prime is 10122221002027. The reversal of 10122221002009 is 90020012222101.

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 5367191558400 + 4755029443609 = 2316720^2 + 2180603^2 .

It is a cyclic number.

It is not a de Polignac number, because 10122221002009 - 2⁷ = 10122221001881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10122221002079) 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, 33967184422 + ... + 33967184719.

It is an arithmetic number, because the mean of its divisors is an integer number (2547538842825).

Almost surely, 2^{10122221002009} is an apocalyptic number.

It is an amenable number.

10122221002009 is a deficient number, since it is larger than the sum of its proper divisors (67934369291).

10122221002009 is an equidigital number, since it uses as much as digits as its factorization.

10122221002009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67934369290.

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

The spelling of 10122221002009 in words is "ten trillion, one hundred twenty-two billion, two hundred twenty-one million, two thousand, nine".