111111120229 has 2 divisors, whose sum is σ = 111111120230. Its totient is φ = 111111120228.

The previous prime is 111111120221. The next prime is 111111120251. The reversal of 111111120229 is 922021111111.

It is a happy number.

It is an a-pointer prime, because the next prime (111111120251) can be obtained adding 111111120229 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106860341025 + 4250779204 = 326895^2 + 65198^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111120229 - 2³ = 111111120221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111120221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555560114 + 55555560115.

It is an arithmetic number, because the mean of its divisors is an integer number (55555560115).

Almost surely, 2^111111120229 is an apocalyptic number.

It is an amenable number.

111111120229 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111120229 is an equidigital number, since it uses as much as digits as its factorization.

111111120229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 111111120229 in words is "one hundred eleven billion, one hundred eleven million, one hundred twenty thousand, two hundred twenty-nine".