211234225 has 12 divisors (see below), whose sum is σ = 263934000. Its totient is φ = 167694800.

The previous prime is 211234223. The next prime is 211234259. The reversal of 211234225 is 522432112.

It is a happy number.

It is not a de Polignac number, because 211234225 - 2¹ = 211234223 is a prime.

It is a super-2 number, since 2×211234225² = 89239795622701250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211234196 and 211234205.

It is not an unprimeable number, because it can be changed into a prime (211234223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28975 + ... + 35524.

It is an arithmetic number, because the mean of its divisors is an integer number (21994500).

Almost surely, 2^211234225 is an apocalyptic number.

211234225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

211234225 is a deficient number, since it is larger than the sum of its proper divisors (52699775).

211234225 is a wasteful number, since it uses less digits than its factorization.

211234225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64640 (or 64635 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 211234225 is about 14533.8991671196. The cubic root of 211234225 is about 595.5543876070.

Adding to 211234225 its reverse (522432112), we get a palindrome (733666337).

The spelling of 211234225 in words is "two hundred eleven million, two hundred thirty-four thousand, two hundred twenty-five".