212216613 has 8 divisors (see below), whose sum is σ = 323377728. Its totient is φ = 121266624.

The previous prime is 212216597. The next prime is 212216617. The reversal of 212216613 is 316612212.

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

It is not a de Polignac number, because 212216613 - 2⁴ = 212216597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212216617) 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, 5052756 + ... + 5052797.

It is an arithmetic number, because the mean of its divisors is an integer number (40422216).

Almost surely, 2^212216613 is an apocalyptic number.

It is an amenable number.

212216613 is a deficient number, since it is larger than the sum of its proper divisors (111161115).

212216613 is a wasteful number, since it uses less digits than its factorization.

212216613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105563.

The product of its digits is 864, while the sum is 24.

The square root of 212216613 is about 14567.6564003960. The cubic root of 212216613 is about 596.4762092341.

Adding to 212216613 its reverse (316612212), we get a palindrome (528828825).

The spelling of 212216613 in words is "two hundred twelve million, two hundred sixteen thousand, six hundred thirteen".