266221235 has 8 divisors (see below), whose sum is σ = 365103456. Its totient is φ = 182551680.

The previous prime is 266221229. The next prime is 266221259. The reversal of 266221235 is 532122662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 266221235 - 2⁶ = 266221171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266221198 and 266221207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3803126 + ... + 3803195.

It is an arithmetic number, because the mean of its divisors is an integer number (45637932).

Almost surely, 2^266221235 is an apocalyptic number.

266221235 is a deficient number, since it is larger than the sum of its proper divisors (98882221).

266221235 is an equidigital number, since it uses as much as digits as its factorization.

266221235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606333.

The product of its digits is 8640, while the sum is 29.

The square root of 266221235 is about 16316.2874147277. The cubic root of 266221235 is about 643.3010070530.

Adding to 266221235 its reverse (532122662), we get a palindrome (798343897).

The spelling of 266221235 in words is "two hundred sixty-six million, two hundred twenty-one thousand, two hundred thirty-five".