16212117 has 8 divisors (see below), whose sum is σ = 22024224. Its totient is φ = 10604048.

The previous prime is 16212107. The next prime is 16212121. The reversal of 16212117 is 71121261.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16212117 - 2⁸ = 16211861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16212093 and 16212102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16212107) 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, 50823 + ... + 51140.

It is an arithmetic number, because the mean of its divisors is an integer number (2753028).

Almost surely, 2^16212117 is an apocalyptic number.

It is an amenable number.

16212117 is a deficient number, since it is larger than the sum of its proper divisors (5812107).

16212117 is a wasteful number, since it uses less digits than its factorization.

16212117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102019.

The product of its digits is 168, while the sum is 21.

The square root of 16212117 is about 4026.4273245645. The cubic root of 16212117 is about 253.0928695080.

Adding to 16212117 its reverse (71121261), we get a palindrome (87333378).

The spelling of 16212117 in words is "sixteen million, two hundred twelve thousand, one hundred seventeen".