126501211 has 2 divisors, whose sum is σ = 126501212. Its totient is φ = 126501210.

The previous prime is 126501209. The next prime is 126501223. The reversal of 126501211 is 112105621.

It is a weak prime.

It is an emirp because it is prime and its reverse (112105621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126501211 - 2¹ = 126501209 is a prime.

Together with 126501209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126501241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63250605 + 63250606.

It is an arithmetic number, because the mean of its divisors is an integer number (63250606).

Almost surely, 2^126501211 is an apocalyptic number.

126501211 is a deficient number, since it is larger than the sum of its proper divisors (1).

126501211 is an equidigital number, since it uses as much as digits as its factorization.

126501211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 126501211 is about 11247.2757145897. The cubic root of 126501211 is about 501.9936547824.

Adding to 126501211 its reverse (112105621), we get a palindrome (238606832).

It can be divided in two parts, 12650 and 1211, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 126501211 in words is "one hundred twenty-six million, five hundred one thousand, two hundred eleven".