126321120011 has 2 divisors, whose sum is σ = 126321120012. Its totient is φ = 126321120010.

The previous prime is 126321119993. The next prime is 126321120031. The reversal of 126321120011 is 110021123621.

It is an a-pointer prime, because the next prime (126321120031) can be obtained adding 126321120011 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126321120011 is a prime.

It is not a weakly prime, because it can be changed into another prime (126321120031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63160560005 + 63160560006.

It is an arithmetic number, because the mean of its divisors is an integer number (63160560006).

Almost surely, 2^126321120011 is an apocalyptic number.

126321120011 is a deficient number, since it is larger than the sum of its proper divisors (1).

126321120011 is an equidigital number, since it uses as much as digits as its factorization.

126321120011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 126321120011 its reverse (110021123621), we get a palindrome (236342243632).

The spelling of 126321120011 in words is "one hundred twenty-six billion, three hundred twenty-one million, one hundred twenty thousand, eleven".