106212247 has 4 divisors (see below), whose sum is σ = 106233480. Its totient is φ = 106191016.

The previous prime is 106212221. The next prime is 106212269. The reversal of 106212247 is 742212601.

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

It is a cyclic number.

It is not a de Polignac number, because 106212247 - 2¹¹ = 106210199 is a prime.

It is a super-2 number, since 2×106212247² = 22562082825578018, 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 (106212047) 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, 1488 + ... + 14650.

It is an arithmetic number, because the mean of its divisors is an integer number (26558370).

Almost surely, 2^106212247 is an apocalyptic number.

106212247 is a deficient number, since it is larger than the sum of its proper divisors (21233).

106212247 is an equidigital number, since it uses as much as digits as its factorization.

106212247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21232.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 106212247 is about 10305.9326118503. The cubic root of 106212247 is about 473.5780143509.

Adding to 106212247 its reverse (742212601), we get a palindrome (848424848).

The spelling of 106212247 in words is "one hundred six million, two hundred twelve thousand, two hundred forty-seven".