212102011 has 8 divisors (see below), whose sum is σ = 234554544. Its totient is φ = 190177920.

The previous prime is 212102003. The next prime is 212102039. The reversal of 212102011 is 110201212.

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 212102011 - 2³ = 212102003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102911) 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, 131266 + ... + 132871.

It is an arithmetic number, because the mean of its divisors is an integer number (29319318).

Almost surely, 2^212102011 is an apocalyptic number.

212102011 is a deficient number, since it is larger than the sum of its proper divisors (22452533).

212102011 is a wasteful number, since it uses less digits than its factorization.

212102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264221.

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

The square root of 212102011 is about 14563.7224293791. The cubic root of 212102011 is about 596.3688194715.

Adding to 212102011 its reverse (110201212), we get a palindrome (322303223).

The spelling of 212102011 in words is "two hundred twelve million, one hundred two thousand, eleven".