21110352229 has 2 divisors, whose sum is σ = 21110352230. Its totient is φ = 21110352228.

The previous prime is 21110352227. The next prime is 21110352253. The reversal of 21110352229 is 92225301112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19795927204 + 1314425025 = 140698^2 + 36255^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110352229 - 2¹ = 21110352227 is a prime.

Together with 21110352227, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21110352197 and 21110352206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110352227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555176114 + 10555176115.

It is an arithmetic number, because the mean of its divisors is an integer number (10555176115).

Almost surely, 2^21110352229 is an apocalyptic number.

It is an amenable number.

21110352229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110352229 is an equidigital number, since it uses as much as digits as its factorization.

21110352229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 21110352229 in words is "twenty-one billion, one hundred ten million, three hundred fifty-two thousand, two hundred twenty-nine".