126212113 has 2 divisors, whose sum is σ = 126212114. Its totient is φ = 126212112.

The previous prime is 126212101. The next prime is 126212137. The reversal of 126212113 is 311212621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126157824 + 54289 = 11232^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 126212113 - 2¹⁷ = 126081041 is a prime.

It is not a weakly prime, because it can be changed into another prime (126212153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63106056 + 63106057.

It is an arithmetic number, because the mean of its divisors is an integer number (63106057).

Almost surely, 2^126212113 is an apocalyptic number.

It is an amenable number.

126212113 is a deficient number, since it is larger than the sum of its proper divisors (1).

126212113 is an equidigital number, since it uses as much as digits as its factorization.

126212113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 126212113 is about 11234.4164512448. The cubic root of 126212113 is about 501.6109547420.

Adding to 126212113 its reverse (311212621), we get a palindrome (437424734).

The spelling of 126212113 in words is "one hundred twenty-six million, two hundred twelve thousand, one hundred thirteen".