202000020220121 has 2 divisors, whose sum is σ = 202000020220122. Its totient is φ = 202000020220120.

The previous prime is 202000020220069. The next prime is 202000020220133. The reversal of 202000020220121 is 121022020000202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160726333928521 + 41273686291600 = 12677789^2 + 6424460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202000020220121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202000020220096 and 202000020220105.

It is not a weakly prime, because it can be changed into another prime (202000020220171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000010110060 + 101000010110061.

It is an arithmetic number, because the mean of its divisors is an integer number (101000010110061).

Almost surely, 2^{202000020220121} is an apocalyptic number.

It is an amenable number.

202000020220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202000020220121 is an equidigital number, since it uses as much as digits as its factorization.

202000020220121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 202000020220121 its reverse (121022020000202), we get a palindrome (323022040220323).

The spelling of 202000020220121 in words is "two hundred two trillion, twenty million, two hundred twenty thousand, one hundred twenty-one".