21110848879 has 2 divisors, whose sum is σ = 21110848880. Its totient is φ = 21110848878.

The previous prime is 21110848867. The next prime is 21110848921. The reversal of 21110848879 is 97884801112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110848879 - 2¹¹ = 21110846831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110848679) 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, 10555424439 + 10555424440.

It is an arithmetic number, because the mean of its divisors is an integer number (10555424440).

Almost surely, 2^21110848879 is an apocalyptic number.

21110848879 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110848879 is an equidigital number, since it uses as much as digits as its factorization.

21110848879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 49.

The spelling of 21110848879 in words is "twenty-one billion, one hundred ten million, eight hundred forty-eight thousand, eight hundred seventy-nine".