212120071 has 8 divisors (see below), whose sum is σ = 216852480. Its totient is φ = 207396888.

The previous prime is 212120063. The next prime is 212120093. The reversal of 212120071 is 170021212.

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 212120071 - 2³ = 212120063 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 (212120021) 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, 66450 + ... + 69568.

It is an arithmetic number, because the mean of its divisors is an integer number (27106560).

Almost surely, 2^212120071 is an apocalyptic number.

212120071 is a deficient number, since it is larger than the sum of its proper divisors (4732409).

212120071 is a wasteful number, since it uses less digits than its factorization.

212120071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 212120071 is about 14564.3424499701. The cubic root of 212120071 is about 596.3857454703.

Adding to 212120071 its reverse (170021212), we get a palindrome (382141283).

The spelling of 212120071 in words is "two hundred twelve million, one hundred twenty thousand, seventy-one".