11211001111129 has 2 divisors, whose sum is σ = 11211001111130. Its totient is φ = 11211001111128.

The previous prime is 11211001111117. The next prime is 11211001111201. The reversal of 11211001111129 is 92111110011211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8682758009104 + 2528243102025 = 2946652^2 + 1590045^2 .

It is an emirp because it is prime and its reverse (92111110011211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211001111129 is a prime.

It is not a weakly prime, because it can be changed into another prime (11211001111109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605500555564 + 5605500555565.

It is an arithmetic number, because the mean of its divisors is an integer number (5605500555565).

Almost surely, 2^{11211001111129} is an apocalyptic number.

It is an amenable number.

11211001111129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211001111129 is an equidigital number, since it uses as much as digits as its factorization.

11211001111129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 22.

The spelling of 11211001111129 in words is "eleven trillion, two hundred eleven billion, one million, one hundred eleven thousand, one hundred twenty-nine".