220102121209 has 2 divisors, whose sum is σ = 220102121210. Its totient is φ = 220102121208.

The previous prime is 220102121203. The next prime is 220102121219. The reversal of 220102121209 is 902121201022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215246818809 + 4855302400 = 463947^2 + 69680^2 .

It is a cyclic number.

It is not a de Polignac number, because 220102121209 - 2⁵ = 220102121177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220102121209.

It is not a weakly prime, because it can be changed into another prime (220102121203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110051060604 + 110051060605.

It is an arithmetic number, because the mean of its divisors is an integer number (110051060605).

Almost surely, 2^220102121209 is an apocalyptic number.

It is an amenable number.

220102121209 is a deficient number, since it is larger than the sum of its proper divisors (1).

220102121209 is an equidigital number, since it uses as much as digits as its factorization.

220102121209 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 220102121209 in words is "two hundred twenty billion, one hundred two million, one hundred twenty-one thousand, two hundred nine".