126321119993 has 2 divisors, whose sum is σ = 126321119994. Its totient is φ = 126321119992.

The previous prime is 126321119987. The next prime is 126321120011. The reversal of 126321119993 is 399911123621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77658083584 + 48663036409 = 278672^2 + 220597^2 .

It is an emirp because it is prime and its reverse (399911123621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126321119993 - 2¹² = 126321115897 is a prime.

It is not a weakly prime, because it can be changed into another prime (126321119893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63160559996 + 63160559997.

It is an arithmetic number, because the mean of its divisors is an integer number (63160559997).

Almost surely, 2^126321119993 is an apocalyptic number.

It is an amenable number.

126321119993 is a deficient number, since it is larger than the sum of its proper divisors (1).

126321119993 is an equidigital number, since it uses as much as digits as its factorization.

126321119993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 47.

The spelling of 126321119993 in words is "one hundred twenty-six billion, three hundred twenty-one million, one hundred nineteen thousand, nine hundred ninety-three".