105523212 has 48 divisors (see below), whose sum is σ = 254016000. Its totient is φ = 34077888.

The previous prime is 105523193. The next prime is 105523219. The reversal of 105523212 is 212325501.

It is a super-2 number, since 2×105523212² = 22270296541593888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105523219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51789 + ... + 53787.

It is an arithmetic number, because the mean of its divisors is an integer number (5292000).

Almost surely, 2^105523212 is an apocalyptic number.

105523212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

105523212 is an abundant number, since it is smaller than the sum of its proper divisors (148492788).

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

105523212 is a wasteful number, since it uses less digits than its factorization.

105523212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 105523212 is about 10272.4491724223. The cubic root of 105523212 is about 472.5517045404.

Adding to 105523212 its reverse (212325501), we get a palindrome (317848713).

The spelling of 105523212 in words is "one hundred five million, five hundred twenty-three thousand, two hundred twelve".