2111144173 has 2 divisors, whose sum is σ = 2111144174. Its totient is φ = 2111144172.

The previous prime is 2111144141. The next prime is 2111144219. The reversal of 2111144173 is 3714411112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1915200169 + 195944004 = 43763^2 + 13998^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111144173 - 2⁵ = 2111144141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111144573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055572086 + 1055572087.

It is an arithmetic number, because the mean of its divisors is an integer number (1055572087).

Almost surely, 2^2111144173 is an apocalyptic number.

It is an amenable number.

2111144173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111144173 is an equidigital number, since it uses as much as digits as its factorization.

2111144173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 2111144173 is about 45947.1889564530. The cubic root of 2111144173 is about 1282.8404071652.

Adding to 2111144173 its reverse (3714411112), we get a palindrome (5825555285).

The spelling of 2111144173 in words is "two billion, one hundred eleven million, one hundred forty-four thousand, one hundred seventy-three".