11111001001229 has 2 divisors, whose sum is σ = 11111001001230. Its totient is φ = 11111001001228.

The previous prime is 11111001001021. The next prime is 11111001001253. The reversal of 11111001001229 is 92210010011111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10759384022500 + 351616978729 = 3280150^2 + 592973^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111001001229 - 2¹⁶ = 11111000935693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11111001001229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111001001259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555500500614 + 5555500500615.

It is an arithmetic number, because the mean of its divisors is an integer number (5555500500615).

Almost surely, 2^{11111001001229} is an apocalyptic number.

It is an amenable number.

11111001001229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111001001229 is an equidigital number, since it uses as much as digits as its factorization.

11111001001229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 11111001001229 in words is "eleven trillion, one hundred eleven billion, one million, one thousand, two hundred twenty-nine".