105123222 has 24 divisors (see below), whose sum is σ = 229787064. Its totient is φ = 34730304.

The previous prime is 105123217. The next prime is 105123233. The reversal of 105123222 is 222321501.

It is a super-2 number, since 2×105123222² = 22101783607322568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 105123195 and 105123204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23808 + ... + 27875.

It is an arithmetic number, because the mean of its divisors is an integer number (9574461).

Almost surely, 2^105123222 is an apocalyptic number.

105123222 is an abundant number, since it is smaller than the sum of its proper divisors (124663842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105123222 is a wasteful number, since it uses less digits than its factorization.

105123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51804 (or 51801 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 105123222 is about 10252.9616209171. The cubic root of 105123222 is about 471.9538730898.

Adding to 105123222 its reverse (222321501), we get a palindrome (327444723).

The spelling of 105123222 in words is "one hundred five million, one hundred twenty-three thousand, two hundred twenty-two".