212171027 has 4 divisors (see below), whose sum is σ = 213356520. Its totient is φ = 210985536.

The previous prime is 212170997. The next prime is 212171041. The reversal of 212171027 is 720171212.

212171027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212171027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212170993 and 212171011.

It is not an unprimeable number, because it can be changed into a prime (212171087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592478 + ... + 592835.

It is an arithmetic number, because the mean of its divisors is an integer number (53339130).

Almost surely, 2^212171027 is an apocalyptic number.

212171027 is a deficient number, since it is larger than the sum of its proper divisors (1185493).

212171027 is a wasteful number, since it uses less digits than its factorization.

212171027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185492.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 212171027 is about 14566.0916858298. The cubic root of 212171027 is about 596.4334967256.

The spelling of 212171027 in words is "two hundred twelve million, one hundred seventy-one thousand, twenty-seven".