12100217 has 4 divisors (see below), whose sum is σ = 12157776. Its totient is φ = 12042660.

The previous prime is 12100211. The next prime is 12100219. The reversal of 12100217 is 71200121.

12100217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12100217 - 2⁴ = 12100201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100211) 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, 28463 + ... + 28884.

It is an arithmetic number, because the mean of its divisors is an integer number (3039444).

Almost surely, 2^12100217 is an apocalyptic number.

It is an amenable number.

12100217 is a deficient number, since it is larger than the sum of its proper divisors (57559).

12100217 is an equidigital number, since it uses as much as digits as its factorization.

12100217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57558.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 12100217 is about 3478.5366176023. The cubic root of 12100217 is about 229.5784148611.

Adding to 12100217 its reverse (71200121), we get a palindrome (83300338).

The spelling of 12100217 in words is "twelve million, one hundred thousand, two hundred seventeen".