1012011032173 has 2 divisors, whose sum is σ = 1012011032174. Its totient is φ = 1012011032172.

The previous prime is 1012011032171. The next prime is 1012011032231. The reversal of 1012011032173 is 3712301102101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557117438409 + 454893593764 = 746403^2 + 674458^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012011032173 - 2¹ = 1012011032171 is a prime.

It is a super-2 number, since 2×1012011032173² (a number of 25 digits) contains 22 as substring.

Together with 1012011032171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012011032171) 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, 506005516086 + 506005516087.

It is an arithmetic number, because the mean of its divisors is an integer number (506005516087).

Almost surely, 2^{1012011032173} is an apocalyptic number.

It is an amenable number.

1012011032173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012011032173 is an equidigital number, since it uses as much as digits as its factorization.

1012011032173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

Adding to 1012011032173 its reverse (3712301102101), we get a palindrome (4724312134274).

The spelling of 1012011032173 in words is "one trillion, twelve billion, eleven million, thirty-two thousand, one hundred seventy-three".