12111201010101 has 16 divisors (see below), whose sum is σ = 16196899299840. Its totient is φ = 8049853735920.

The previous prime is 12111201010061. The next prime is 12111201010121. The reversal of 12111201010101 is 10101010211121.

It is not a de Polignac number, because 12111201010101 - 2⁶ = 12111201010037 is a prime.

12111201010101 is a modest number, since divided by 1010101 gives 121112 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111201010121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3051081 + ... + 5790638.

It is an arithmetic number, because the mean of its divisors is an integer number (1012306206240).

Almost surely, 2^{12111201010101} is an apocalyptic number.

It is an amenable number.

12111201010101 is a deficient number, since it is larger than the sum of its proper divisors (4085698289739).

12111201010101 is an equidigital number, since it uses as much as digits as its factorization.

12111201010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8843096.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 12111201010101 its reverse (10101010211121), we get a palindrome (22212211221222).

The spelling of 12111201010101 in words is "twelve trillion, one hundred eleven billion, two hundred one million, ten thousand, one hundred one".