66212103 has 8 divisors (see below), whose sum is σ = 89193328. Its totient is φ = 43686144.

The previous prime is 66212087. The next prime is 66212119. The reversal of 66212103 is 30121266.

It is a happy number.

66212103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66212087) and next prime (66212119).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66212103 - 2⁴ = 66212087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66212903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113476 + ... + 114057.

It is an arithmetic number, because the mean of its divisors is an integer number (11149166).

Almost surely, 2^66212103 is an apocalyptic number.

66212103 is a deficient number, since it is larger than the sum of its proper divisors (22981225).

66212103 is a wasteful number, since it uses less digits than its factorization.

66212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227633.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 66212103 is about 8137.0819708296. The cubic root of 66212103 is about 404.5564477974.

Adding to 66212103 its reverse (30121266), we get a palindrome (96333369).

The spelling of 66212103 in words is "sixty-six million, two hundred twelve thousand, one hundred three".