12121101211201 has 16 divisors (see below), whose sum is σ = 12662119411200. Its totient is φ = 11581253310528.

The previous prime is 12121101211171. The next prime is 12121101211243. The reversal of 12121101211201 is 10211210112121.

It is a cyclic number.

It is not a de Polignac number, because 12121101211201 - 2⁵ = 12121101211169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121101211301) 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, 280630915 + ... + 280674103.

It is an arithmetic number, because the mean of its divisors is an integer number (791382463200).

Almost surely, 2^{12121101211201} is an apocalyptic number.

It is an amenable number.

12121101211201 is a deficient number, since it is larger than the sum of its proper divisors (541018199999).

12121101211201 is a wasteful number, since it uses less digits than its factorization.

12121101211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56448.

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

Adding to 12121101211201 its reverse (10211210112121), we get a palindrome (22332311323322).

The spelling of 12121101211201 in words is "twelve trillion, one hundred twenty-one billion, one hundred one million, two hundred eleven thousand, two hundred one".