12111101222001 has 16 divisors (see below), whose sum is σ = 16705135353600. Its totient is φ = 7795572891008.

The previous prime is 12111101221993. The next prime is 12111101222057. The reversal of 12111101222001 is 10022210111121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12111101222001 - 2³ = 12111101221993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111101222501) 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, 8715160 + ... + 10008806.

It is an arithmetic number, because the mean of its divisors is an integer number (1044070959600).

Almost surely, 2^{12111101222001} is an apocalyptic number.

It is an amenable number.

12111101222001 is a deficient number, since it is larger than the sum of its proper divisors (4594034131599).

12111101222001 is a wasteful number, since it uses less digits than its factorization.

12111101222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401288.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12111101222001 its reverse (10022210111121), we get a palindrome (22133311333122).

The spelling of 12111101222001 in words is "twelve trillion, one hundred eleven billion, one hundred one million, two hundred twenty-two thousand, one".