212152117 has 8 divisors (see below), whose sum is σ = 218182016. Its totient is φ = 206137872.

The previous prime is 212152099. The next prime is 212152159. The reversal of 212152117 is 711251212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212152117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212152177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26968 + ... + 33934.

It is an arithmetic number, because the mean of its divisors is an integer number (27272752).

Almost surely, 2^212152117 is an apocalyptic number.

It is an amenable number.

212152117 is a deficient number, since it is larger than the sum of its proper divisors (6029899).

212152117 is an equidigital number, since it uses as much as digits as its factorization.

212152117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7827.

The product of its digits is 280, while the sum is 22.

The square root of 212152117 is about 14565.4425610759. The cubic root of 212152117 is about 596.4157769130.

It can be divided in two parts, 21215 and 2117, that added together give a palindrome (23332).

The spelling of 212152117 in words is "two hundred twelve million, one hundred fifty-two thousand, one hundred seventeen".