105021223 has 8 divisors (see below), whose sum is σ = 111296592. Its totient is φ = 98756736.

The previous prime is 105021139. The next prime is 105021247. The reversal of 105021223 is 322120501.

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 105021223 - 2¹⁷ = 104890151 is a prime.

It is a super-2 number, since 2×105021223² = 22058914560831458, 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 = 105021197 and 105021206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105022223) 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, 25761 + ... + 29557.

It is an arithmetic number, because the mean of its divisors is an integer number (13912074).

Almost surely, 2^105021223 is an apocalyptic number.

105021223 is a deficient number, since it is larger than the sum of its proper divisors (6275369).

105021223 is a wasteful number, since it uses less digits than its factorization.

105021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5441.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 105021223 is about 10247.9862899986. The cubic root of 105021223 is about 471.8011811664.

Adding to 105021223 its reverse (322120501), we get a palindrome (427141724).

The spelling of 105021223 in words is "one hundred five million, twenty-one thousand, two hundred twenty-three".