21124530010079 has 2 divisors, whose sum is σ = 21124530010080. Its totient is φ = 21124530010078.

The previous prime is 21124530010043. The next prime is 21124530010097. The reversal of 21124530010079 is 97001003542112.

Together with next prime (21124530010097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21124530010079 - 2⁸ = 21124530009823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21124530010039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562265005039 + 10562265005040.

It is an arithmetic number, because the mean of its divisors is an integer number (10562265005040).

Almost surely, 2^{21124530010079} is an apocalyptic number.

21124530010079 is a deficient number, since it is larger than the sum of its proper divisors (1).

21124530010079 is an equidigital number, since it uses as much as digits as its factorization.

21124530010079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 21124530010079 in words is "twenty-one trillion, one hundred twenty-four billion, five hundred thirty million, ten thousand, seventy-nine".