12105321010 has 16 divisors (see below), whose sum is σ = 21900188376. Its totient is φ = 4817548288.

The previous prime is 12105321001. The next prime is 12105321023. The reversal of 12105321010 is 1012350121.

It can be written as a sum of positive squares in 4 ways, for example, as 11886014529 + 219306481 = 109023^2 + 14809^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3070447 + ... + 3074386.

Almost surely, 2^12105321010 is an apocalyptic number.

12105321010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12105321010 is a deficient number, since it is larger than the sum of its proper divisors (9794867366).

12105321010 is a wasteful number, since it uses less digits than its factorization.

12105321010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6145037.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 12105321010 its reverse (1012350121), we get a palindrome (13117671131).

The spelling of 12105321010 in words is "twelve billion, one hundred five million, three hundred twenty-one thousand, ten".