1111001000173 has 2 divisors, whose sum is σ = 1111001000174. Its totient is φ = 1111001000172.

The previous prime is 1111001000147. The next prime is 1111001000237. The reversal of 1111001000173 is 3710001001111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1040110340164 + 70890660009 = 1019858^2 + 266253^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111001000173 - 2²⁹ = 1110464129261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111001000273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555500500086 + 555500500087.

It is an arithmetic number, because the mean of its divisors is an integer number (555500500087).

Almost surely, 2^{1111001000173} is an apocalyptic number.

It is an amenable number.

1111001000173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111001000173 is an equidigital number, since it uses as much as digits as its factorization.

1111001000173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21, while the sum is 16.

Adding to 1111001000173 its reverse (3710001001111), we get a palindrome (4821002001284).

The spelling of 1111001000173 in words is "one trillion, one hundred eleven billion, one million, one hundred seventy-three", and thus it is an aban number.