1111202112173 has 2 divisors, whose sum is σ = 1111202112174. Its totient is φ = 1111202112172.

The previous prime is 1111202112169. The next prime is 1111202112221. The reversal of 1111202112173 is 3712112021111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1046441023849 + 64761088324 = 1022957^2 + 254482^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111202112173 - 2² = 1111202112169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111202112103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555601056086 + 555601056087.

It is an arithmetic number, because the mean of its divisors is an integer number (555601056087).

Almost surely, 2^{1111202112173} is an apocalyptic number.

It is an amenable number.

1111202112173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111202112173 is an equidigital number, since it uses as much as digits as its factorization.

1111202112173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 23.

Adding to 1111202112173 its reverse (3712112021111), we get a palindrome (4823314133284).

The spelling of 1111202112173 in words is "one trillion, one hundred eleven billion, two hundred two million, one hundred twelve thousand, one hundred seventy-three".