212011210 has 8 divisors (see below), whose sum is σ = 381620196. Its totient is φ = 84804480.

The previous prime is 212011207. The next prime is 212011223. The reversal of 212011210 is 12110212.

It can be written as a sum of positive squares in 2 ways, for example, as 188595289 + 23415921 = 13733^2 + 4839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 21201121 = 212011210 / (2 + 1 + 2 + 0 + 1 + 1 + 2 + 1 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10600551 + ... + 10600570.

Almost surely, 2^212011210 is an apocalyptic number.

212011210 is a deficient number, since it is larger than the sum of its proper divisors (169608986).

212011210 is a wasteful number, since it uses less digits than its factorization.

212011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21201128.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 212011210 is about 14560.6047264528. The cubic root of 212011210 is about 596.2837053730.

Adding to 212011210 its reverse (12110212), we get a palindrome (224121422).

The spelling of 212011210 in words is "two hundred twelve million, eleven thousand, two hundred ten".