12101112020221 has 16 divisors (see below), whose sum is σ = 14593287456000. Its totient is φ = 9809932099968.

The previous prime is 12101112020219. The next prime is 12101112020227. The reversal of 12101112020221 is 12202021110121.

It is not a de Polignac number, because 12101112020221 - 2¹ = 12101112020219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101112020195 and 12101112020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101112020227) 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, 422245146 + ... + 422273803.

It is an arithmetic number, because the mean of its divisors is an integer number (912080466000).

Almost surely, 2^{12101112020221} is an apocalyptic number.

It is an amenable number.

12101112020221 is a deficient number, since it is larger than the sum of its proper divisors (2492175435779).

12101112020221 is an equidigital number, since it uses as much as digits as its factorization.

12101112020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844519068.

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

Adding to 12101112020221 its reverse (12202021110121), we get a palindrome (24303133130342).

The spelling of 12101112020221 in words is "twelve trillion, one hundred one billion, one hundred twelve million, twenty thousand, two hundred twenty-one".