212057211 has 16 divisors (see below), whose sum is σ = 289625600. Its totient is φ = 137969568.

The previous prime is 212057161. The next prime is 212057227. The reversal of 212057211 is 112750212.

It is not a de Polignac number, because 212057211 - 2¹⁴ = 212040827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212057011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17070 + ... + 26748.

It is an arithmetic number, because the mean of its divisors is an integer number (18101600).

Almost surely, 2^212057211 is an apocalyptic number.

212057211 is a deficient number, since it is larger than the sum of its proper divisors (77568389).

212057211 is a wasteful number, since it uses less digits than its factorization.

212057211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9858.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 212057211 is about 14562.1842798393. The cubic root of 212057211 is about 596.3268283492.

The spelling of 212057211 in words is "two hundred twelve million, fifty-seven thousand, two hundred eleven".