201121001201 has 2 divisors, whose sum is σ = 201121001202. Its totient is φ = 201121001200.

The previous prime is 201121001171. The next prime is 201121001203. The reversal of 201121001201 is 102100121102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133114792801 + 68006208400 = 364849^2 + 260780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201121001201 is a prime.

Together with 201121001203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201121001203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560500600 + 100560500601.

It is an arithmetic number, because the mean of its divisors is an integer number (100560500601).

Almost surely, 2^201121001201 is an apocalyptic number.

It is an amenable number.

201121001201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121001201 is an equidigital number, since it uses as much as digits as its factorization.

201121001201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201121001201 its reverse (102100121102), we get a palindrome (303221122303).

The spelling of 201121001201 in words is "two hundred one billion, one hundred twenty-one million, one thousand, two hundred one".