212965171 has 4 divisors (see below), whose sum is σ = 225492552. Its totient is φ = 200437792.

The previous prime is 212965153. The next prime is 212965177. The reversal of 212965171 is 171569212.

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

It is a cyclic number.

It is not a de Polignac number, because 212965171 - 2¹¹ = 212963123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212965177) 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, 6263665 + ... + 6263698.

It is an arithmetic number, because the mean of its divisors is an integer number (56373138).

Almost surely, 2^212965171 is an apocalyptic number.

212965171 is a deficient number, since it is larger than the sum of its proper divisors (12527381).

212965171 is a wasteful number, since it uses less digits than its factorization.

212965171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12527380.

The product of its digits is 7560, while the sum is 34.

The square root of 212965171 is about 14593.3262486659. The cubic root of 212965171 is about 597.1767090324.

The spelling of 212965171 in words is "two hundred twelve million, nine hundred sixty-five thousand, one hundred seventy-one".