105695221 has 2 divisors, whose sum is σ = 105695222. Its totient is φ = 105695220.

The previous prime is 105695207. The next prime is 105695267. The reversal of 105695221 is 122596501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53494596 + 52200625 = 7314^2 + 7225^2 .

It is an emirp because it is prime and its reverse (122596501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105695221 is a prime.

It is a super-2 number, since 2×105695221² = 22342959484477682, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105695321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52847610 + 52847611.

It is an arithmetic number, because the mean of its divisors is an integer number (52847611).

Almost surely, 2^105695221 is an apocalyptic number.

It is an amenable number.

105695221 is a deficient number, since it is larger than the sum of its proper divisors (1).

105695221 is an equidigital number, since it uses as much as digits as its factorization.

105695221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 105695221 is about 10280.8181094697. The cubic root of 105695221 is about 472.8083274487.

The spelling of 105695221 in words is "one hundred five million, six hundred ninety-five thousand, two hundred twenty-one".