21022111400179 has 2 divisors, whose sum is σ = 21022111400180. Its totient is φ = 21022111400178.

The previous prime is 21022111400077. The next prime is 21022111400197. The reversal of 21022111400179 is 97100411122012.

Together with next prime (21022111400197) 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 21022111400179 - 2¹⁹ = 21022110875891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21022111400179.

It is not a weakly prime, because it can be changed into another prime (21022111400579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511055700089 + 10511055700090.

It is an arithmetic number, because the mean of its divisors is an integer number (10511055700090).

Almost surely, 2^{21022111400179} is an apocalyptic number.

21022111400179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022111400179 is an equidigital number, since it uses as much as digits as its factorization.

21022111400179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 21022111400179 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, four hundred thousand, one hundred seventy-nine".