1001002220209 has 2 divisors, whose sum is σ = 1001002220210. Its totient is φ = 1001002220208.

The previous prime is 1001002220191. The next prime is 1001002220227. The reversal of 1001002220209 is 9020222001001.

It is a balanced prime because it is at equal distance from previous prime (1001002220191) and next prime (1001002220227).

It can be written as a sum of positive squares in only one way, i.e., 822462168609 + 178540051600 = 906897^2 + 422540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001002220209 - 2¹⁷ = 1001002089137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001002220269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500501110104 + 500501110105.

It is an arithmetic number, because the mean of its divisors is an integer number (500501110105).

Almost surely, 2^{1001002220209} is an apocalyptic number.

It is an amenable number.

1001002220209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001002220209 is an equidigital number, since it uses as much as digits as its factorization.

1001002220209 is an evil number, because the sum of its binary digits is even.

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

The spelling of 1001002220209 in words is "one trillion, one billion, two million, two hundred twenty thousand, two hundred nine".