12101000020121 has 2 divisors, whose sum is σ = 12101000020122. Its totient is φ = 12101000020120.

The previous prime is 12101000020103. The next prime is 12101000020139. The reversal of 12101000020121 is 12102000010121.

It is a balanced prime because it is at equal distance from previous prime (12101000020103) and next prime (12101000020139).

It can be written as a sum of positive squares in only one way, i.e., 8468164020121 + 3632836000000 = 2910011^2 + 1906000^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101000020121 - 2³⁸ = 11826122113177 is a prime.

It is not a weakly prime, because it can be changed into another prime (12101000028121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050500010060 + 6050500010061.

It is an arithmetic number, because the mean of its divisors is an integer number (6050500010061).

Almost surely, 2^{12101000020121} is an apocalyptic number.

It is an amenable number.

12101000020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101000020121 is an equidigital number, since it uses as much as digits as its factorization.

12101000020121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12101000020121 its reverse (12102000010121), we get a palindrome (24203000030242).

It can be divided in two parts, 121010000 and 20121, that added together give a palindrome (121030121).

The spelling of 12101000020121 in words is "twelve trillion, one hundred one billion, twenty thousand, one hundred twenty-one".