201121110110237 has 2 divisors, whose sum is σ = 201121110110238. Its totient is φ = 201121110110236.

The previous prime is 201121110110209. The next prime is 201121110110243. The reversal of 201121110110237 is 732011011121102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118471665411961 + 82649444698276 = 10884469^2 + 9091174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201121110110237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201121110110537) 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, 100560555055118 + 100560555055119.

It is an arithmetic number, because the mean of its divisors is an integer number (100560555055119).

Almost surely, 2^{201121110110237} is an apocalyptic number.

It is an amenable number.

201121110110237 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121110110237 is an equidigital number, since it uses as much as digits as its factorization.

201121110110237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 23.

Adding to 201121110110237 its reverse (732011011121102), we get a palindrome (933132121231339).

The spelling of 201121110110237 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred ten million, one hundred ten thousand, two hundred thirty-seven".