11111331229 has 2 divisors, whose sum is σ = 11111331230. Its totient is φ = 11111331228.

The previous prime is 11111331199. The next prime is 11111331247. The reversal of 11111331229 is 92213311111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10201404004 + 909927225 = 101002^2 + 30165^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111331229 - 2⁹ = 11111330717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111331929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555665614 + 5555665615.

It is an arithmetic number, because the mean of its divisors is an integer number (5555665615).

Almost surely, 2^11111331229 is an apocalyptic number.

It is an amenable number.

11111331229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111331229 is an equidigital number, since it uses as much as digits as its factorization.

11111331229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 25.

The spelling of 11111331229 in words is "eleven billion, one hundred eleven million, three hundred thirty-one thousand, two hundred twenty-nine".