1220102012209 has 2 divisors, whose sum is σ = 1220102012210. Its totient is φ = 1220102012208.

The previous prime is 1220102012203. The next prime is 1220102012303. The reversal of 1220102012209 is 9022102010221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 987334360609 + 232767651600 = 993647^2 + 482460^2 .

It is an emirp because it is prime and its reverse (9022102010221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220102012209 - 2⁵ = 1220102012177 is a prime.

It is a super-3 number, since 3×1220102012209³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220102012209.

It is not a weakly prime, because it can be changed into another prime (1220102012203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610051006104 + 610051006105.

It is an arithmetic number, because the mean of its divisors is an integer number (610051006105).

Almost surely, 2^{1220102012209} is an apocalyptic number.

It is an amenable number.

1220102012209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220102012209 is an equidigital number, since it uses as much as digits as its factorization.

1220102012209 is an evil number, because the sum of its binary digits is even.

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

The spelling of 1220102012209 in words is "one trillion, two hundred twenty billion, one hundred two million, twelve thousand, two hundred nine".