12101202120121 has 2 divisors, whose sum is σ = 12101202120122. Its totient is φ = 12101202120120.

The previous prime is 12101202120071. The next prime is 12101202120169. The reversal of 12101202120121 is 12102120210121.

12101202120121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9745010890000 + 2356191230121 = 3121700^2 + 1534989^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101202120121 - 2²³ = 12101193731513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12101202120095 and 12101202120104.

It is not a weakly prime, because it can be changed into another prime (12101202121121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050601060060 + 6050601060061.

It is an arithmetic number, because the mean of its divisors is an integer number (6050601060061).

Almost surely, 2^{12101202120121} is an apocalyptic number.

It is an amenable number.

12101202120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101202120121 is an equidigital number, since it uses as much as digits as its factorization.

12101202120121 is an evil number, because the sum of its binary digits is even.

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

Adding to 12101202120121 its reverse (12102120210121), we get a palindrome (24203322330242).

Subtracting 12101202120121 from its reverse (12102120210121), we obtain a square (918090000 = 30300²).

The spelling of 12101202120121 in words is "twelve trillion, one hundred one billion, two hundred two million, one hundred twenty thousand, one hundred twenty-one".