1011010001173 has 2 divisors, whose sum is σ = 1011010001174. Its totient is φ = 1011010001172.

The previous prime is 1011010001083. The next prime is 1011010001203. The reversal of 1011010001173 is 3711000101101.

1011010001173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701026076529 + 309983924644 = 837273^2 + 556762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011010001173 - 2⁹ = 1011010000661 is a prime.

It is a super-2 number, since 2×1011010001173² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011010301173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505505000586 + 505505000587.

It is an arithmetic number, because the mean of its divisors is an integer number (505505000587).

Almost surely, 2^{1011010001173} is an apocalyptic number.

It is an amenable number.

1011010001173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011010001173 is an equidigital number, since it uses as much as digits as its factorization.

1011010001173 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 1011010001173 its reverse (3711000101101), we get a palindrome (4722010102274).

The spelling of 1011010001173 in words is "one trillion, eleven billion, ten million, one thousand, one hundred seventy-three".