1111022120209 has 2 divisors, whose sum is σ = 1111022120210. Its totient is φ = 1111022120208.

The previous prime is 1111022120177. The next prime is 1111022120249. The reversal of 1111022120209 is 9020212201111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721930612225 + 389091507984 = 849665^2 + 623772^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111022120209 - 2⁵ = 1111022120177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111022120209.

It is not a weakly prime, because it can be changed into another prime (1111022120249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555511060104 + 555511060105.

It is an arithmetic number, because the mean of its divisors is an integer number (555511060105).

Almost surely, 2^{1111022120209} is an apocalyptic number.

It is an amenable number.

1111022120209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111022120209 is an equidigital number, since it uses as much as digits as its factorization.

1111022120209 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 22.

The spelling of 1111022120209 in words is "one trillion, one hundred eleven billion, twenty-two million, one hundred twenty thousand, two hundred nine".