212117086 has 8 divisors (see below), whose sum is σ = 332009424. Its totient is φ = 101447280.

The previous prime is 212117053. The next prime is 212117111. The reversal of 212117086 is 680711212.

212117086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2305575 + ... + 2305666.

It is an arithmetic number, because the mean of its divisors is an integer number (41501178).

Almost surely, 2^212117086 is an apocalyptic number.

212117086 is a deficient number, since it is larger than the sum of its proper divisors (119892338).

212117086 is a wasteful number, since it uses less digits than its factorization.

212117086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611266.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 212117086 is about 14564.2399733045. The cubic root of 212117086 is about 596.3829479670.

Adding to 212117086 its reverse (680711212), we get a palindrome (892828298).

The spelling of 212117086 in words is "two hundred twelve million, one hundred seventeen thousand, eighty-six".