111220020122209 has 2 divisors, whose sum is σ = 111220020122210. Its totient is φ = 111220020122208.

The previous prime is 111220020122171. The next prime is 111220020122273. The reversal of 111220020122209 is 902221020022111.

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., 81274335891984 + 29945684230225 = 9015228^2 + 5472265^2 .

It is a cyclic number.

It is not a de Polignac number, because 111220020122209 - 2²¹ = 111220018025057 is a prime.

It is not a weakly prime, because it can be changed into another prime (111220024122209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610010061104 + 55610010061105.

It is an arithmetic number, because the mean of its divisors is an integer number (55610010061105).

Almost surely, 2^{111220020122209} is an apocalyptic number.

It is an amenable number.

111220020122209 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220020122209 is an equidigital number, since it uses as much as digits as its factorization.

111220020122209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 111220020122209 in words is "one hundred eleven trillion, two hundred twenty billion, twenty million, one hundred twenty-two thousand, two hundred nine".