201020950121 has 2 divisors, whose sum is σ = 201020950122. Its totient is φ = 201020950120.

The previous prime is 201020950079. The next prime is 201020950157. The reversal of 201020950121 is 121059020102.

201020950121 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., 183081294400 + 17939655721 = 427880^2 + 133939^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020950121 - 2¹⁸ = 201020687977 is a prime.

It is not a weakly prime, because it can be changed into another prime (201020950021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510475060 + 100510475061.

It is an arithmetic number, because the mean of its divisors is an integer number (100510475061).

Almost surely, 2^201020950121 is an apocalyptic number.

It is an amenable number.

201020950121 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020950121 is an equidigital number, since it uses as much as digits as its factorization.

201020950121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 201020950121 its reverse (121059020102), we get a palindrome (322079970223).

The spelling of 201020950121 in words is "two hundred one billion, twenty million, nine hundred fifty thousand, one hundred twenty-one".