1210220001209 has 2 divisors, whose sum is σ = 1210220001210. Its totient is φ = 1210220001208.

The previous prime is 1210220001167. The next prime is 1210220001217. The reversal of 1210220001209 is 9021000220121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1186295645584 + 23924355625 = 1089172^2 + 154675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210220001209 - 2³⁶ = 1141500524473 is a prime.

It is a super-2 number, since 2×1210220001209² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1210220001259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605110000604 + 605110000605.

It is an arithmetic number, because the mean of its divisors is an integer number (605110000605).

Almost surely, 2^{1210220001209} is an apocalyptic number.

It is an amenable number.

1210220001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210220001209 is an equidigital number, since it uses as much as digits as its factorization.

1210220001209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1210220001209 in words is "one trillion, two hundred ten billion, two hundred twenty million, one thousand, two hundred nine".