105103566021 has 8 divisors (see below), whose sum is σ = 142057788160. Its totient is φ = 69109193952.

The previous prime is 105103565999. The next prime is 105103566037. The reversal of 105103566021 is 120665301501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105103566021 - 2¹⁰ = 105103564997 is a prime.

It is a super-2 number, since 2×105103566021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105103566021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105103566041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239962261 + ... + 239962698.

It is an arithmetic number, because the mean of its divisors is an integer number (17757223520).

Almost surely, 2^105103566021 is an apocalyptic number.

It is an amenable number.

105103566021 is a deficient number, since it is larger than the sum of its proper divisors (36954222139).

105103566021 is an equidigital number, since it uses as much as digits as its factorization.

105103566021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479925035.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 105103566021 its reverse (120665301501), we get a palindrome (225768867522).

The spelling of 105103566021 in words is "one hundred five billion, one hundred three million, five hundred sixty-six thousand, twenty-one".