212571161 has 8 divisors (see below), whose sum is σ = 232724448. Its totient is φ = 192556000.

The previous prime is 212571157. The next prime is 212571167. The reversal of 212571161 is 161175212.

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 212571161 - 2² = 212571157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212571161.

It is not an unprimeable number, because it can be changed into a prime (212571167) 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, 31295 + ... + 37476.

It is an arithmetic number, because the mean of its divisors is an integer number (29090556).

Almost surely, 2^212571161 is an apocalyptic number.

It is an amenable number.

212571161 is a deficient number, since it is larger than the sum of its proper divisors (20153287).

212571161 is a wasteful number, since it uses less digits than its factorization.

212571161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69063.

The product of its digits is 840, while the sum is 26.

The square root of 212571161 is about 14579.8203349698. The cubic root of 212571161 is about 596.8081998687.

The spelling of 212571161 in words is "two hundred twelve million, five hundred seventy-one thousand, one hundred sixty-one".