11218511053 has 2 divisors, whose sum is σ = 11218511054. Its totient is φ = 11218511052.

The previous prime is 11218511039. The next prime is 11218511063. The reversal of 11218511053 is 35011581211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7465478409 + 3753032644 = 86403^2 + 61262^2 .

It is an emirp because it is prime and its reverse (35011581211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11218511053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11218511063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5609255526 + 5609255527.

It is an arithmetic number, because the mean of its divisors is an integer number (5609255527).

Almost surely, 2^11218511053 is an apocalyptic number.

It is an amenable number.

11218511053 is a deficient number, since it is larger than the sum of its proper divisors (1).

11218511053 is an equidigital number, since it uses as much as digits as its factorization.

11218511053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 28.

The spelling of 11218511053 in words is "eleven billion, two hundred eighteen million, five hundred eleven thousand, fifty-three".