105216427 has 2 divisors, whose sum is σ = 105216428. Its totient is φ = 105216426.

The previous prime is 105216407. The next prime is 105216431. The reversal of 105216427 is 724612501.

It is a strong prime.

It is an emirp because it is prime and its reverse (724612501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105216427 - 2¹¹ = 105214379 is a prime.

It is a super-2 number, since 2×105216427² = 22140993021292658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105216395 and 105216404.

It is not a weakly prime, because it can be changed into another prime (105216407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52608213 + 52608214.

It is an arithmetic number, because the mean of its divisors is an integer number (52608214).

Almost surely, 2^105216427 is an apocalyptic number.

105216427 is a deficient number, since it is larger than the sum of its proper divisors (1).

105216427 is an equidigital number, since it uses as much as digits as its factorization.

105216427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 105216427 is about 10257.5058859354. The cubic root of 105216427 is about 472.0933141059.

Adding to 105216427 its reverse (724612501), we get a palindrome (829828928).

The spelling of 105216427 in words is "one hundred five million, two hundred sixteen thousand, four hundred twenty-seven".