110055544021 has 4 divisors (see below), whose sum is σ = 110121486700. Its totient is φ = 109989601344.

The previous prime is 110055543979. The next prime is 110055544033. The reversal of 110055544021 is 120445550011.

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 65971922500 + 44083621521 = 256850^2 + 209961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110055544021 is a prime.

It is a super-2 number, since 2×110055544021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110055544091) 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, 32968836 + ... + 32972173.

It is an arithmetic number, because the mean of its divisors is an integer number (27530371675).

Almost surely, 2^110055544021 is an apocalyptic number.

It is an amenable number.

110055544021 is a deficient number, since it is larger than the sum of its proper divisors (65942679).

110055544021 is an equidigital number, since it uses as much as digits as its factorization.

110055544021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65942678.

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 110055544021 in words is "one hundred ten billion, fifty-five million, five hundred forty-four thousand, twenty-one".