215122223 has 8 divisors (see below), whose sum is σ = 217969920. Its totient is φ = 212288800.

The previous prime is 215122217. The next prime is 215122247. The reversal of 215122223 is 322221512.

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 215122223 - 2⁴ = 215122207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215122195 and 215122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215122273) 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, 28658 + ... + 35376.

It is an arithmetic number, because the mean of its divisors is an integer number (27246240).

Almost surely, 2^215122223 is an apocalyptic number.

215122223 is a deficient number, since it is larger than the sum of its proper divisors (2847697).

215122223 is a wasteful number, since it uses less digits than its factorization.

215122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7137.

The product of its digits is 480, while the sum is 20.

The square root of 215122223 is about 14667.0454761687. The cubic root of 215122223 is about 599.1861400710.

Adding to 215122223 its reverse (322221512), we get a palindrome (537343735).

The spelling of 215122223 in words is "two hundred fifteen million, one hundred twenty-two thousand, two hundred twenty-three".