11211110137 has 2 divisors, whose sum is σ = 11211110138. Its totient is φ = 11211110136.

The previous prime is 11211110047. The next prime is 11211110161. The reversal of 11211110137 is 73101111211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8727483241 + 2483626896 = 93421^2 + 49836^2 .

It is an emirp because it is prime and its reverse (73101111211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11211110137 - 2²³ = 11202721529 is a prime.

It is not a weakly prime, because it can be changed into another prime (11211119137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605555068 + 5605555069.

It is an arithmetic number, because the mean of its divisors is an integer number (5605555069).

Almost surely, 2^11211110137 is an apocalyptic number.

It is an amenable number.

11211110137 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211110137 is an equidigital number, since it uses as much as digits as its factorization.

11211110137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 19.

Adding to 11211110137 its reverse (73101111211), we get a palindrome (84312221348).

The spelling of 11211110137 in words is "eleven billion, two hundred eleven million, one hundred ten thousand, one hundred thirty-seven".