221048880 has 80 divisors (see below), whose sum is σ = 737973600. Its totient is φ = 54411264.

The previous prime is 221048857. The next prime is 221048887. The reversal of 221048880 is 88840122.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (221048887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32305 + ... + 38544.

It is an arithmetic number, because the mean of its divisors is an integer number (9224670).

Almost surely, 2^221048880 is an apocalyptic number.

221048880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221048880 is an abundant number, since it is smaller than the sum of its proper divisors (516924720).

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

221048880 is a wasteful number, since it uses less digits than its factorization.

221048880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70878 (or 70872 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 221048880 is about 14867.7126687329. The cubic root of 221048880 is about 604.6389303309.

The spelling of 221048880 in words is "two hundred twenty-one million, forty-eight thousand, eight hundred eighty".