211233212 has 12 divisors (see below), whose sum is σ = 369768840. Its totient is φ = 105584976.

The previous prime is 211233193. The next prime is 211233221. The reversal of 211233212 is 212332112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13643 + ... + 24669.

It is an arithmetic number, because the mean of its divisors is an integer number (30814070).

Almost surely, 2^211233212 is an apocalyptic number.

It is an amenable number.

211233212 is a deficient number, since it is larger than the sum of its proper divisors (158535628).

211233212 is a wasteful number, since it uses less digits than its factorization.

211233212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15820 (or 15818 counting only the distinct ones).

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

The square root of 211233212 is about 14533.8643175172. The cubic root of 211233212 is about 595.5534355871.

Adding to 211233212 its reverse (212332112), we get a palindrome (423565324).

The spelling of 211233212 in words is "two hundred eleven million, two hundred thirty-three thousand, two hundred twelve".