21124122059 has 2 divisors, whose sum is σ = 21124122060. Its totient is φ = 21124122058.

The previous prime is 21124122017. The next prime is 21124122127. The reversal of 21124122059 is 95022142112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21124122059 is a prime.

It is not a weakly prime, because it can be changed into another prime (21124122359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562061029 + 10562061030.

It is an arithmetic number, because the mean of its divisors is an integer number (10562061030).

Almost surely, 2^21124122059 is an apocalyptic number.

21124122059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21124122059 is an equidigital number, since it uses as much as digits as its factorization.

21124122059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 21124122059 in words is "twenty-one billion, one hundred twenty-four million, one hundred twenty-two thousand, fifty-nine".