11201221002137 has 2 divisors, whose sum is σ = 11201221002138. Its totient is φ = 11201221002136.

The previous prime is 11201221002119. The next prime is 11201221002149. The reversal of 11201221002137 is 73120012210211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10943552074816 + 257668927321 = 3308104^2 + 507611^2 .

It is a cyclic number.

It is not a de Polignac number, because 11201221002137 - 2⁶ = 11201221002073 is a prime.

It is not a weakly prime, because it can be changed into another prime (11201221002107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600610501068 + 5600610501069.

It is an arithmetic number, because the mean of its divisors is an integer number (5600610501069).

Almost surely, 2^{11201221002137} is an apocalyptic number.

It is an amenable number.

11201221002137 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201221002137 is an equidigital number, since it uses as much as digits as its factorization.

11201221002137 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 23.

Adding to 11201221002137 its reverse (73120012210211), we get a palindrome (84321233212348).

The spelling of 11201221002137 in words is "eleven trillion, two hundred one billion, two hundred twenty-one million, two thousand, one hundred thirty-seven".