111010221110209 has 2 divisors, whose sum is σ = 111010221110210. Its totient is φ = 111010221110208.

The previous prime is 111010221110203. The next prime is 111010221110233. The reversal of 111010221110209 is 902011122010111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95219969157184 + 15790251953025 = 9758072^2 + 3973695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111010221110209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111010221110209.

It is not a weakly prime, because it can be changed into another prime (111010221110203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505110555104 + 55505110555105.

It is an arithmetic number, because the mean of its divisors is an integer number (55505110555105).

Almost surely, 2^{111010221110209} is an apocalyptic number.

It is an amenable number.

111010221110209 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010221110209 is an equidigital number, since it uses as much as digits as its factorization.

111010221110209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 111010221110209 in words is "one hundred eleven trillion, ten billion, two hundred twenty-one million, one hundred ten thousand, two hundred nine".