1012112173 has 2 divisors, whose sum is σ = 1012112174. Its totient is φ = 1012112172.

The previous prime is 1012112141. The next prime is 1012112177. The reversal of 1012112173 is 3712112101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 750869604 + 261242569 = 27402^2 + 16163^2 .

It is an emirp because it is prime and its reverse (3712112101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012112173 - 2⁵ = 1012112141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012112173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012112177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506056086 + 506056087.

It is an arithmetic number, because the mean of its divisors is an integer number (506056087).

Almost surely, 2^1012112173 is an apocalyptic number.

It is an amenable number.

1012112173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012112173 is an equidigital number, since it uses as much as digits as its factorization.

1012112173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 1012112173 is about 31813.7104563426. The cubic root of 1012112173 is about 1004.0211992820.

Adding to 1012112173 its reverse (3712112101), we get a palindrome (4724224274).

The spelling of 1012112173 in words is "one billion, twelve million, one hundred twelve thousand, one hundred seventy-three".