21110223359 has 2 divisors, whose sum is σ = 21110223360. Its totient is φ = 21110223358.

The previous prime is 21110223317. The next prime is 21110223389. The reversal of 21110223359 is 95332201112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21110223359 - 2²⁸ = 20841787903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110223389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555111679 + 10555111680.

It is an arithmetic number, because the mean of its divisors is an integer number (10555111680).

Almost surely, 2^21110223359 is an apocalyptic number.

21110223359 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110223359 is an equidigital number, since it uses as much as digits as its factorization.

21110223359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 21110223359 in words is "twenty-one billion, one hundred ten million, two hundred twenty-three thousand, three hundred fifty-nine".