201211022137 has 2 divisors, whose sum is σ = 201211022138. Its totient is φ = 201211022136.

The previous prime is 201211022099. The next prime is 201211022149. The reversal of 201211022137 is 731220112102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142348498681 + 58862523456 = 377291^2 + 242616^2 .

It is a cyclic number.

It is not a de Polignac number, because 201211022137 - 2¹¹ = 201211020089 is a prime.

It is not a weakly prime, because it can be changed into another prime (201211022197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605511068 + 100605511069.

It is an arithmetic number, because the mean of its divisors is an integer number (100605511069).

Almost surely, 2^201211022137 is an apocalyptic number.

It is an amenable number.

201211022137 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211022137 is an equidigital number, since it uses as much as digits as its factorization.

201211022137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 201211022137 its reverse (731220112102), we get a palindrome (932431134239).

The spelling of 201211022137 in words is "two hundred one billion, two hundred eleven million, twenty-two thousand, one hundred thirty-seven".