105444121 has 4 divisors (see below), whose sum is σ = 110028672. Its totient is φ = 100859572.

The previous prime is 105444109. The next prime is 105444139. The reversal of 105444121 is 121444501.

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.

It is a cyclic number.

It is not a de Polignac number, because 105444121 - 2⁵ = 105444089 is a prime.

It is a super-2 number, since 2×105444121² = 22236925306925282, 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 = 105444092 and 105444101.

It is not an unprimeable number, because it can be changed into a prime (105444161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2292241 + ... + 2292286.

It is an arithmetic number, because the mean of its divisors is an integer number (27507168).

Almost surely, 2^105444121 is an apocalyptic number.

It is an amenable number.

105444121 is a deficient number, since it is larger than the sum of its proper divisors (4584551).

105444121 is an equidigital number, since it uses as much as digits as its factorization.

105444121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584550.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 105444121 is about 10268.5987846444. The cubic root of 105444121 is about 472.4336138454.

Adding to 105444121 its reverse (121444501), we get a palindrome (226888622).

The spelling of 105444121 in words is "one hundred five million, four hundred forty-four thousand, one hundred twenty-one".