105211123244212 has 12 divisors (see below), whose sum is σ = 184154224911300. Its totient is φ = 52595630412416.

The previous prime is 105211123244209. The next prime is 105211123244231. The reversal of 105211123244212 is 212442321112501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39412354861476 + 65798768382736 = 6277926^2 + 8111644^2 .

It is a super-2 number, since 2×105211123244212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2482778587 + ... + 2482820962.

It is an arithmetic number, because the mean of its divisors is an integer number (15346185409275).

Almost surely, 2^{105211123244212} is an apocalyptic number.

It is an amenable number.

105211123244212 is a deficient number, since it is larger than the sum of its proper divisors (78943101667088).

105211123244212 is a wasteful number, since it uses less digits than its factorization.

105211123244212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4965604850 (or 4965604848 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

Adding to 105211123244212 its reverse (212442321112501), we get a palindrome (317653444356713).

The spelling of 105211123244212 in words is "one hundred five trillion, two hundred eleven billion, one hundred twenty-three million, two hundred forty-four thousand, two hundred twelve".