12101313201221 has 16 divisors (see below), whose sum is σ = 13438118225664. Its totient is φ = 10838975879424.

The previous prime is 12101313201139. The next prime is 12101313201239. The reversal of 12101313201221 is 12210231310121.

It is a cyclic number.

It is not a de Polignac number, because 12101313201221 - 2³⁰ = 12100239459397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101313201193 and 12101313201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101313201421) 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, 78475385 + ... + 78629438.

It is an arithmetic number, because the mean of its divisors is an integer number (839882389104).

Almost surely, 2^{12101313201221} is an apocalyptic number.

It is an amenable number.

12101313201221 is a deficient number, since it is larger than the sum of its proper divisors (1336805024443).

12101313201221 is a wasteful number, since it uses less digits than its factorization.

12101313201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157105060.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12101313201221 its reverse (12210231310121), we get a palindrome (24311544511342).

The spelling of 12101313201221 in words is "twelve trillion, one hundred one billion, three hundred thirteen million, two hundred one thousand, two hundred twenty-one".