105217712 has 20 divisors (see below), whose sum is σ = 204085896. Its totient is φ = 52550400.

The previous prime is 105217711. The next prime is 105217729. The reversal of 105217712 is 217712501.

It is a super-2 number, since 2×105217712² = 22141533837029888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105217711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13688 + ... + 19944.

Almost surely, 2^105217712 is an apocalyptic number.

It is an amenable number.

105217712 is a deficient number, since it is larger than the sum of its proper divisors (98868184).

105217712 is a wasteful number, since it uses less digits than its factorization.

105217712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7316 (or 7310 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 105217712 is about 10257.5685228031. The cubic root of 105217712 is about 472.0952359777.

The spelling of 105217712 in words is "one hundred five million, two hundred seventeen thousand, seven hundred twelve".