21110112203179 has 2 divisors, whose sum is σ = 21110112203180. Its totient is φ = 21110112203178.

The previous prime is 21110112203111. The next prime is 21110112203249. The reversal of 21110112203179 is 97130221101112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110112203179 - 2²⁷ = 21109977985451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21110112203179.

It is not a weakly prime, because it can be changed into another prime (21110112201179) 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, 10555056101589 + 10555056101590.

It is an arithmetic number, because the mean of its divisors is an integer number (10555056101590).

Almost surely, 2^{21110112203179} is an apocalyptic number.

21110112203179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110112203179 is an equidigital number, since it uses as much as digits as its factorization.

21110112203179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 31.

The spelling of 21110112203179 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve million, two hundred three thousand, one hundred seventy-nine".