20112322020121 has 2 divisors, whose sum is σ = 20112322020122. Its totient is φ = 20112322020120.

The previous prime is 20112322020097. The next prime is 20112322020149. The reversal of 20112322020121 is 12102022321102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14134321470096 + 5978000550025 = 3759564^2 + 2444995^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112322020121 - 2³⁹ = 19562566206233 is a prime.

It is not a weakly prime, because it can be changed into another prime (20112322020221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056161010060 + 10056161010061.

It is an arithmetic number, because the mean of its divisors is an integer number (10056161010061).

Almost surely, 2^{20112322020121} is an apocalyptic number.

It is an amenable number.

20112322020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112322020121 is an equidigital number, since it uses as much as digits as its factorization.

20112322020121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20112322020121 its reverse (12102022321102), we get a palindrome (32214344341223).

The spelling of 20112322020121 in words is "twenty trillion, one hundred twelve billion, three hundred twenty-two million, twenty thousand, one hundred twenty-one".