211332212 has 48 divisors (see below), whose sum is σ = 479149440. Its totient is φ = 79201152.

The previous prime is 211332203. The next prime is 211332223. The reversal of 211332212 is 212233112.

It is a super-2 number, since 2×211332212² = 89322607657625888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8363 + ... + 22194.

It is an arithmetic number, because the mean of its divisors is an integer number (9982280).

Almost surely, 2^211332212 is an apocalyptic number.

It is an amenable number.

211332212 is an abundant number, since it is smaller than the sum of its proper divisors (267817228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211332212 is a wasteful number, since it uses less digits than its factorization.

211332212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30600 (or 30598 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 211332212 is about 14537.2697574201. The cubic root of 211332212 is about 595.6464616489.

Adding to 211332212 its reverse (212233112), we get a palindrome (423565324).

The spelling of 211332212 in words is "two hundred eleven million, three hundred thirty-two thousand, two hundred twelve".