221048000 has 56 divisors (see below), whose sum is σ = 547445184. Its totient is φ = 88416000.

The previous prime is 221047999. The next prime is 221048029. The reversal of 221048000 is 840122.

It is a self number, because there is not a number n which added to its sum of digits gives 221048000.

It is an unprimeable number.

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, 5816 + ... + 21815.

Almost surely, 2^221048000 is an apocalyptic number.

221048000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221048000 is an abundant number, since it is smaller than the sum of its proper divisors (326397184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221048000 is an equidigital number, since it uses as much as digits as its factorization.

221048000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27658 (or 27638 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 221048000 is about 14867.6830743731. The cubic root of 221048000 is about 604.6381279700.

Adding to 221048000 its reverse (840122), we get a palindrome (221888122).

The spelling of 221048000 in words is "two hundred twenty-one million, forty-eight thousand".