105221843 has 8 divisors (see below), whose sum is σ = 108865536. Its totient is φ = 101593800.

The previous prime is 105221833. The next prime is 105221869. The reversal of 105221843 is 348122501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105221843 - 2⁴ = 105221827 is a prime.

It is a super-2 number, since 2×105221843² = 22143272488633298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105221833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10688 + ... + 18018.

It is an arithmetic number, because the mean of its divisors is an integer number (13608192).

Almost surely, 2^105221843 is an apocalyptic number.

105221843 is a deficient number, since it is larger than the sum of its proper divisors (3643693).

105221843 is an equidigital number, since it uses as much as digits as its factorization.

105221843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7825.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 105221843 is about 10257.7698843365. The cubic root of 105221843 is about 472.1014142781.

The spelling of 105221843 in words is "one hundred five million, two hundred twenty-one thousand, eight hundred forty-three".