12111211101201 has 64 divisors (see below), whose sum is σ = 16961078384640. Its totient is φ = 7678104698880.

The previous prime is 12111211101179. The next prime is 12111211101217. The reversal of 12111211101201 is 10210111211121.

It is not a de Polignac number, because 12111211101201 - 2⁶ = 12111211101137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111211101281) 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 63 ways as a sum of consecutive naturals, for example, 884216785 + ... + 884230481.

It is an arithmetic number, because the mean of its divisors is an integer number (265016849760).

Almost surely, 2^{12111211101201} is an apocalyptic number.

It is an amenable number.

12111211101201 is a deficient number, since it is larger than the sum of its proper divisors (4849867283439).

12111211101201 is a wasteful number, since it uses less digits than its factorization.

12111211101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14474.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12111211101201 its reverse (10210111211121), we get a palindrome (22321322312322).

The spelling of 12111211101201 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, one hundred one thousand, two hundred one".