221880160 has 48 divisors (see below), whose sum is σ = 542278800. Its totient is φ = 85689856.

The previous prime is 221880143. The next prime is 221880163. The reversal of 221880160 is 61088122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221880163) 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, 19270 + ... + 28549.

It is an arithmetic number, because the mean of its divisors is an integer number (11297475).

Almost surely, 2^221880160 is an apocalyptic number.

221880160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221880160 is an abundant number, since it is smaller than the sum of its proper divisors (320398640).

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

221880160 is a wasteful number, since it uses less digits than its factorization.

221880160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47863 (or 47855 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 221880160 is about 14895.6423157916. The cubic root of 221880160 is about 605.3959205256.

The spelling of 221880160 in words is "two hundred twenty-one million, eight hundred eighty thousand, one hundred sixty".