1111111110073 has 2 divisors, whose sum is σ = 1111111110074. Its totient is φ = 1111111110072.

The previous prime is 1111111110041. The next prime is 1111111110079. The reversal of 1111111110073 is 3700111111111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 773912556729 + 337198553344 = 879723^2 + 580688^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111111110073 - 2⁵ = 1111111110041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111111110073.

It is not a weakly prime, because it can be changed into another prime (1111111110079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555555555036 + 555555555037.

It is an arithmetic number, because the mean of its divisors is an integer number (555555555037).

Almost surely, 2^{1111111110073} is an apocalyptic number.

It is an amenable number.

1111111110073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111111110073 is an equidigital number, since it uses as much as digits as its factorization.

1111111110073 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 19.

Adding to 1111111110073 its reverse (3700111111111), we get a palindrome (4811222221184).

The spelling of 1111111110073 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, seventy-three".