211456229 has 8 divisors (see below), whose sum is σ = 216805848. Its totient is φ = 206115840.

The previous prime is 211456213. The next prime is 211456249. The reversal of 211456229 is 922654112.

It can be written as a sum of positive squares in 4 ways, for example, as 14615329 + 196840900 = 3823^2 + 14030^2 .

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 211456229 - 2⁴ = 211456213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211456195 and 211456204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211456249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 81419 + ... + 83975.

It is an arithmetic number, because the mean of its divisors is an integer number (27100731).

Almost surely, 2^211456229 is an apocalyptic number.

It is an amenable number.

211456229 is a deficient number, since it is larger than the sum of its proper divisors (5349619).

211456229 is a wasteful number, since it uses less digits than its factorization.

211456229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615.

The product of its digits is 8640, while the sum is 32.

The square root of 211456229 is about 14541.5346164014. The cubic root of 211456229 is about 595.7629541314.

The spelling of 211456229 in words is "two hundred eleven million, four hundred fifty-six thousand, two hundred twenty-nine".