20222002002121 has 2 divisors, whose sum is σ = 20222002002122. Its totient is φ = 20222002002120.

The previous prime is 20222002002071. The next prime is 20222002002149. The reversal of 20222002002121 is 12120020022202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15179906899600 + 5042095102521 = 3896140^2 + 2245461^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222002002121 - 2¹¹ = 20222002000073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20222002002095 and 20222002002104.

It is not a weakly prime, because it can be changed into another prime (20222002002221) 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 as a sum of consecutive naturals, namely, 10111001001060 + 10111001001061.

It is an arithmetic number, because the mean of its divisors is an integer number (10111001001061).

Almost surely, 2^{20222002002121} is an apocalyptic number.

It is an amenable number.

20222002002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222002002121 is an equidigital number, since it uses as much as digits as its factorization.

20222002002121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20222002002121 its reverse (12120020022202), we get a palindrome (32342022024323).

The spelling of 20222002002121 in words is "twenty trillion, two hundred twenty-two billion, two million, two thousand, one hundred twenty-one".