111143422673 has 2 divisors, whose sum is σ = 111143422674. Its totient is φ = 111143422672.

The previous prime is 111143422609. The next prime is 111143422697. The reversal of 111143422673 is 376224341111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109410115984 + 1733306689 = 330772^2 + 41633^2 .

It is an emirp because it is prime and its reverse (376224341111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111143422673 - 2⁶ = 111143422609 is a prime.

It is not a weakly prime, because it can be changed into another prime (111143422073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55571711336 + 55571711337.

It is an arithmetic number, because the mean of its divisors is an integer number (55571711337).

Almost surely, 2^111143422673 is an apocalyptic number.

It is an amenable number.

111143422673 is a deficient number, since it is larger than the sum of its proper divisors (1).

111143422673 is an equidigital number, since it uses as much as digits as its factorization.

111143422673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

Adding to 111143422673 its reverse (376224341111), we get a palindrome (487367763784).

The spelling of 111143422673 in words is "one hundred eleven billion, one hundred forty-three million, four hundred twenty-two thousand, six hundred seventy-three".