106221207 has 4 divisors (see below), whose sum is σ = 141628280. Its totient is φ = 70814136.

The previous prime is 106221187. The next prime is 106221209. The reversal of 106221207 is 702122601.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 106221207 - 2²⁰ = 105172631 is a prime.

It is a super-2 number, since 2×106221207² = 22565889633073698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106221209) 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, 17703532 + ... + 17703537.

It is an arithmetic number, because the mean of its divisors is an integer number (35407070).

Almost surely, 2^106221207 is an apocalyptic number.

106221207 is a deficient number, since it is larger than the sum of its proper divisors (35407073).

106221207 is an equidigital number, since it uses as much as digits as its factorization.

106221207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35407072.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 106221207 is about 10306.3673037594. The cubic root of 106221207 is about 473.5913308934.

Adding to 106221207 its reverse (702122601), we get a palindrome (808343808).

The spelling of 106221207 in words is "one hundred six million, two hundred twenty-one thousand, two hundred seven".