106211220217 has 4 divisors (see below), whose sum is σ = 106767300096. Its totient is φ = 105655140340.

The previous prime is 106211220191. The next prime is 106211220281. The reversal of 106211220217 is 712022112601.

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 a de Polignac number, because none of the positive numbers 2^k-106211220217 is a prime.

It is a super-2 number, since 2×106211220217² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106211220191 and 106211220200.

It is not an unprimeable number, because it can be changed into a prime (106211220517) 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, 278039653 + ... + 278040034.

It is an arithmetic number, because the mean of its divisors is an integer number (26691825024).

Almost surely, 2^106211220217 is an apocalyptic number.

It is an amenable number.

106211220217 is a deficient number, since it is larger than the sum of its proper divisors (556079879).

106211220217 is an equidigital number, since it uses as much as digits as its factorization.

106211220217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556079878.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 106211220217 its reverse (712022112601), we get a palindrome (818233332818).

The spelling of 106211220217 in words is "one hundred six billion, two hundred eleven million, two hundred twenty thousand, two hundred seventeen".