111010111221013 has 2 divisors, whose sum is σ = 111010111221014. Its totient is φ = 111010111221012.

The previous prime is 111010111221011. The next prime is 111010111221047. The reversal of 111010111221013 is 310122111010111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98108272221444 + 12901838999569 = 9904962^2 + 3591913^2 .

It is an emirp because it is prime and its reverse (310122111010111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111010111221013 - 2¹ = 111010111221011 is a prime.

Together with 111010111221011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111010111221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505055610506 + 55505055610507.

It is an arithmetic number, because the mean of its divisors is an integer number (55505055610507).

Almost surely, 2^{111010111221013} is an apocalyptic number.

It is an amenable number.

111010111221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010111221013 is an equidigital number, since it uses as much as digits as its factorization.

111010111221013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 111010111221013 its reverse (310122111010111), we get a palindrome (421132222231124).

The spelling of 111010111221013 in words is "one hundred eleven trillion, ten billion, one hundred eleven million, two hundred twenty-one thousand, thirteen".