21022111400579 has 2 divisors, whose sum is σ = 21022111400580. Its totient is φ = 21022111400578.

The previous prime is 21022111400557. The next prime is 21022111400597. The reversal of 21022111400579 is 97500411122012.

Together with next prime (21022111400597) 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 21022111400579 - 2²⁴ = 21022094623363 is a prime.

It is not a weakly prime, because it can be changed into another prime (21022111400179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511055700289 + 10511055700290.

It is an arithmetic number, because the mean of its divisors is an integer number (10511055700290).

Almost surely, 2^{21022111400579} is an apocalyptic number.

21022111400579 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022111400579 is an equidigital number, since it uses as much as digits as its factorization.

21022111400579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 21022111400579 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, four hundred thousand, five hundred seventy-nine".