111110221073 has 2 divisors, whose sum is σ = 111110221074. Its totient is φ = 111110221072.

The previous prime is 111110221009. The next prime is 111110221121. The reversal of 111110221073 is 370122011111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93209921809 + 17900299264 = 305303^2 + 133792^2 .

It is an emirp because it is prime and its reverse (370122011111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111110221073 - 2⁶ = 111110221009 is a prime.

It is not a weakly prime, because it can be changed into another prime (111110221373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555110536 + 55555110537.

It is an arithmetic number, because the mean of its divisors is an integer number (55555110537).

Almost surely, 2^111110221073 is an apocalyptic number.

It is an amenable number.

111110221073 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110221073 is an equidigital number, since it uses as much as digits as its factorization.

111110221073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 111110221073 its reverse (370122011111), we get a palindrome (481232232184).

The spelling of 111110221073 in words is "one hundred eleven billion, one hundred ten million, two hundred twenty-one thousand, seventy-three".