221050826 has 16 divisors (see below), whose sum is σ = 352123200. Its totient is φ = 103779648.

The previous prime is 221050811. The next prime is 221050853. The reversal of 221050826 is 628050122.

It is a junction number, because it is equal to n+sod(n) for n = 221050795 and 221050804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21446 + ... + 30033.

It is an arithmetic number, because the mean of its divisors is an integer number (22007700).

Almost surely, 2^221050826 is an apocalyptic number.

221050826 is a deficient number, since it is larger than the sum of its proper divisors (131072374).

221050826 is a wasteful number, since it uses less digits than its factorization.

221050826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51613.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 221050826 is about 14867.7781124148. The cubic root of 221050826 is about 604.6407046352.

The spelling of 221050826 in words is "two hundred twenty-one million, fifty thousand, eight hundred twenty-six".