21110112202243 has 2 divisors, whose sum is σ = 21110112202244. Its totient is φ = 21110112202242.

The previous prime is 21110112202177. The next prime is 21110112202247. The reversal of 21110112202243 is 34220221101112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21110112202243 - 2¹⁷ = 21110112071171 is a prime.

It is not a weakly prime, because it can be changed into another prime (21110112202247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555056101121 + 10555056101122.

It is an arithmetic number, because the mean of its divisors is an integer number (10555056101122).

Almost surely, 2^{21110112202243} is an apocalyptic number.

21110112202243 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110112202243 is an equidigital number, since it uses as much as digits as its factorization.

21110112202243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21110112202243 its reverse (34220221101112), we get a palindrome (55330333303355).

The spelling of 21110112202243 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve million, two hundred two thousand, two hundred forty-three".