111111013223101 has 4 divisors (see below), whose sum is σ = 111111453106812. Its totient is φ = 111110573339392.

The previous prime is 111111013223071. The next prime is 111111013223159. The reversal of 111111013223101 is 101322310111111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11360876948100 + 99750136275001 = 3370590^2 + 9987499^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111013223101 - 2⁹ = 111111013222589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111013223501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219562750 + ... + 220068223.

It is an arithmetic number, because the mean of its divisors is an integer number (27777863276703).

Almost surely, 2^{111111013223101} is an apocalyptic number.

It is an amenable number.

111111013223101 is a deficient number, since it is larger than the sum of its proper divisors (439883711).

111111013223101 is an equidigital number, since it uses as much as digits as its factorization.

111111013223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439883710.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 111111013223101 its reverse (101322310111111), we get a palindrome (212433323334212).

The spelling of 111111013223101 in words is "one hundred eleven trillion, one hundred eleven billion, thirteen million, two hundred twenty-three thousand, one hundred one".