211223255 has 8 divisors (see below), whose sum is σ = 256316400. Its totient is φ = 167079616.

The previous prime is 211223251. The next prime is 211223261. The reversal of 211223255 is 552322112.

211223255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211223255 - 2² = 211223251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211223255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211223251) 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, 236885 + ... + 237774.

It is an arithmetic number, because the mean of its divisors is an integer number (32039550).

Almost surely, 2^211223255 is an apocalyptic number.

211223255 is a deficient number, since it is larger than the sum of its proper divisors (45093145).

211223255 is an equidigital number, since it uses as much as digits as its factorization.

211223255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474753.

The product of its digits is 1200, while the sum is 23.

The square root of 211223255 is about 14533.5217686561. The cubic root of 211223255 is about 595.5440778119.

Adding to 211223255 its reverse (552322112), we get a palindrome (763545367).

The spelling of 211223255 in words is "two hundred eleven million, two hundred twenty-three thousand, two hundred fifty-five".