201022122120121 has 2 divisors, whose sum is σ = 201022122120122. Its totient is φ = 201022122120120.

The previous prime is 201022122120107. The next prime is 201022122120143. The reversal of 201022122120121 is 121021221220102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157275075756096 + 43747046364025 = 12540936^2 + 6614155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201022122120121 is a prime.

It is not a weakly prime, because it can be changed into another prime (201022122127121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100511061060060 + 100511061060061.

It is an arithmetic number, because the mean of its divisors is an integer number (100511061060061).

Almost surely, 2^{201022122120121} is an apocalyptic number.

It is an amenable number.

201022122120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

201022122120121 is an equidigital number, since it uses as much as digits as its factorization.

201022122120121 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 19.

Adding to 201022122120121 its reverse (121021221220102), we get a palindrome (322043343340223).

The spelling of 201022122120121 in words is "two hundred one trillion, twenty-two billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".