105510121 has 8 divisors (see below), whose sum is σ = 107661960. Its totient is φ = 103364352.

The previous prime is 105510107. The next prime is 105510127. The reversal of 105510121 is 121015501.

It can be written as a sum of positive squares in 4 ways, for example, as 6786025 + 98724096 = 2605^2 + 9936^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 105510121 - 2¹⁷ = 105379049 is a prime.

It is a super-2 number, since 2×105510121² = 22264771266869282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105510095 and 105510104.

It is not an unprimeable number, because it can be changed into a prime (105510127) 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, 52491 + ... + 54463.

It is an arithmetic number, because the mean of its divisors is an integer number (13457745).

Almost surely, 2^105510121 is an apocalyptic number.

It is an amenable number.

105510121 is a deficient number, since it is larger than the sum of its proper divisors (2151839).

105510121 is a wasteful number, since it uses less digits than its factorization.

105510121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 105510121 is about 10271.8119628428. The cubic root of 105510121 is about 472.5321624571.

Adding to 105510121 its reverse (121015501), we get a palindrome (226525622).

The spelling of 105510121 in words is "one hundred five million, five hundred ten thousand, one hundred twenty-one".