110111310021 has 4 divisors (see below), whose sum is σ = 146815080032. Its totient is φ = 73407540012.

The previous prime is 110111310017. The next prime is 110111310037. The reversal of 110111310021 is 120013111011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120013111011 = 3 ⋅40004370337.

It is not a de Polignac number, because 110111310021 - 2² = 110111310017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110111309979 and 110111310006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111312021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18351885001 + ... + 18351885006.

It is an arithmetic number, because the mean of its divisors is an integer number (36703770008).

Almost surely, 2^110111310021 is an apocalyptic number.

It is an amenable number.

110111310021 is a deficient number, since it is larger than the sum of its proper divisors (36703770011).

110111310021 is an equidigital number, since it uses as much as digits as its factorization.

110111310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36703770010.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 110111310021 its reverse (120013111011), we get a palindrome (230124421032).

The spelling of 110111310021 in words is "one hundred ten billion, one hundred eleven million, three hundred ten thousand, twenty-one".