12111201222001 has 16 divisors (see below), whose sum is σ = 14145559418880. Its totient is φ = 10153192464720.

The previous prime is 12111201221993. The next prime is 12111201222019. The reversal of 12111201222001 is 10022210211121.

It is a cyclic number.

It is not a de Polignac number, because 12111201222001 - 2³ = 12111201221993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111201222031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12135535 + ... + 13095556.

It is an arithmetic number, because the mean of its divisors is an integer number (884097463680).

Almost surely, 2^{12111201222001} is an apocalyptic number.

It is an amenable number.

12111201222001 is a deficient number, since it is larger than the sum of its proper divisors (2034358196879).

12111201222001 is a wasteful number, since it uses less digits than its factorization.

12111201222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25232604.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12111201222001 its reverse (10022210211121), we get a palindrome (22133411433122).

The spelling of 12111201222001 in words is "twelve trillion, one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, one".