11011111229 has 2 divisors, whose sum is σ = 11011111230. Its totient is φ = 11011111228.

The previous prime is 11011111187. The next prime is 11011111271. The reversal of 11011111229 is 92211111011.

It is a balanced prime because it is at equal distance from previous prime (11011111187) and next prime (11011111271).

It can be written as a sum of positive squares in only one way, i.e., 10357132900 + 653978329 = 101770^2 + 25573^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011111229 - 2²⁰ = 11010062653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11011111229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011111129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505555614 + 5505555615.

It is an arithmetic number, because the mean of its divisors is an integer number (5505555615).

Almost surely, 2^11011111229 is an apocalyptic number.

It is an amenable number.

11011111229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011111229 is an equidigital number, since it uses as much as digits as its factorization.

11011111229 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 20.

The spelling of 11011111229 in words is "eleven billion, eleven million, one hundred eleven thousand, two hundred twenty-nine".