201202212100121 has 2 divisors, whose sum is σ = 201202212100122. Its totient is φ = 201202212100120.

The previous prime is 201202212100093. The next prime is 201202212100139. The reversal of 201202212100121 is 121001212202102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180637900825600 + 20564311274521 = 13440160^2 + 4534789^2 .

It is a cyclic number.

It is not a de Polignac number, because 201202212100121 - 2²⁶ = 201202144991257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201202212100121.

It is not a weakly prime, because it can be changed into another prime (201202212180121) 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, 100601106050060 + 100601106050061.

It is an arithmetic number, because the mean of its divisors is an integer number (100601106050061).

Almost surely, 2^{201202212100121} is an apocalyptic number.

It is an amenable number.

201202212100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

201202212100121 is an equidigital number, since it uses as much as digits as its factorization.

201202212100121 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 17.

Adding to 201202212100121 its reverse (121001212202102), we get a palindrome (322203424302223).

The spelling of 201202212100121 in words is "two hundred one trillion, two hundred two billion, two hundred twelve million, one hundred thousand, one hundred twenty-one".