12100221020121 has 8 divisors (see below), whose sum is σ = 17374676336640. Its totient is φ = 7446289858512.

The previous prime is 12100221020113. The next prime is 12100221020161. The reversal of 12100221020121 is 12102012200121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12100221020121 - 2³ = 12100221020113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12100221020121.

It is not an unprimeable number, because it can be changed into a prime (12100221020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155131038681 + ... + 155131038758.

It is an arithmetic number, because the mean of its divisors is an integer number (2171834542080).

Almost surely, 2^{12100221020121} is an apocalyptic number.

It is an amenable number.

12100221020121 is a deficient number, since it is larger than the sum of its proper divisors (5274455316519).

12100221020121 is a wasteful number, since it uses less digits than its factorization.

12100221020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310262077455.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12100221020121 its reverse (12102012200121), we get a palindrome (24202233220242).

The spelling of 12100221020121 in words is "twelve trillion, one hundred billion, two hundred twenty-one million, twenty thousand, one hundred twenty-one".