12201120020121 has 4 divisors (see below), whose sum is σ = 16268160026832. Its totient is φ = 8134080013412.

The previous prime is 12201120020107. The next prime is 12201120020129. The reversal of 12201120020121 is 12102002110221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12201120020121 - 2²² = 12201115825817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12201120020121.

It is not an unprimeable number, because it can be changed into a prime (12201120020129) 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 3 ways as a sum of consecutive naturals, for example, 2033520003351 + ... + 2033520003356.

It is an arithmetic number, because the mean of its divisors is an integer number (4067040006708).

Almost surely, 2^{12201120020121} is an apocalyptic number.

It is an amenable number.

12201120020121 is a deficient number, since it is larger than the sum of its proper divisors (4067040006711).

12201120020121 is an equidigital number, since it uses as much as digits as its factorization.

12201120020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067040006710.

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

Adding to 12201120020121 its reverse (12102002110221), we get a palindrome (24303122130342).

The spelling of 12201120020121 in words is "twelve trillion, two hundred one billion, one hundred twenty million, twenty thousand, one hundred twenty-one".