126111229 has 2 divisors, whose sum is σ = 126111230. Its totient is φ = 126111228.

The previous prime is 126111197. The next prime is 126111239. The reversal of 126111229 is 922111621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108722329 + 17388900 = 10427^2 + 4170^2 .

It is a cyclic number.

It is not a de Polignac number, because 126111229 - 2⁵ = 126111197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126111239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63055614 + 63055615.

It is an arithmetic number, because the mean of its divisors is an integer number (63055615).

Almost surely, 2^126111229 is an apocalyptic number.

It is an amenable number.

126111229 is a deficient number, since it is larger than the sum of its proper divisors (1).

126111229 is an equidigital number, since it uses as much as digits as its factorization.

126111229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

The square root of 126111229 is about 11229.9256008221. The cubic root of 126111229 is about 501.4772697165.

The spelling of 126111229 in words is "one hundred twenty-six million, one hundred eleven thousand, two hundred twenty-nine".