110112111100021 has 4 divisors (see below), whose sum is σ = 111247287503212. Its totient is φ = 108976934696832.

The previous prime is 110112111100009. The next prime is 110112111100027. The reversal of 110112111100021 is 120001111211011.

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 26305153611025 + 83806957488996 = 5128855^2 + 9154614^2 .

It is a cyclic number.

It is not a de Polignac number, because 110112111100021 - 2¹¹ = 110112111097973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110112111099974 and 110112111100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110112111100027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567588201450 + ... + 567588201643.

It is an arithmetic number, because the mean of its divisors is an integer number (27811821875803).

Almost surely, 2^{110112111100021} is an apocalyptic number.

It is an amenable number.

110112111100021 is a deficient number, since it is larger than the sum of its proper divisors (1135176403191).

110112111100021 is an equidigital number, since it uses as much as digits as its factorization.

110112111100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135176403190.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 110112111100021 its reverse (120001111211011), we get a palindrome (230113222311032).

The spelling of 110112111100021 in words is "one hundred ten trillion, one hundred twelve billion, one hundred eleven million, one hundred thousand, twenty-one".