12201020210105 has 4 divisors (see below), whose sum is σ = 14641224252132. Its totient is φ = 9760816168080.

The previous prime is 12201020210083. The next prime is 12201020210143. The reversal of 12201020210105 is 50101202010221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7791645987904 + 4409374222201 = 2791352^2 + 2099851^2 .

It is not a de Polignac number, because 12201020210105 - 2³² = 12196725242809 is a prime.

It is a super-2 number, since 2×12201020210105² (a number of 27 digits) contains 22 as substring.

It is a Duffinian 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, 1220102021006 + ... + 1220102021015.

It is an arithmetic number, because the mean of its divisors is an integer number (3660306063033).

Almost surely, 2^{12201020210105} is an apocalyptic number.

It is an amenable number.

12201020210105 is a deficient number, since it is larger than the sum of its proper divisors (2440204042027).

12201020210105 is an equidigital number, since it uses as much as digits as its factorization.

12201020210105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440204042026.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 12201020210105 its reverse (50101202010221), we get a palindrome (62302222220326).

The spelling of 12201020210105 in words is "twelve trillion, two hundred one billion, twenty million, two hundred ten thousand, one hundred five".