221488044 has 24 divisors (see below), whose sum is σ = 517149360. Its totient is φ = 73780224.

The previous prime is 221487991. The next prime is 221488049. The reversal of 221488044 is 440884122.

It is a junction number, because it is equal to n+sod(n) for n = 221487996 and 221488014.

It is not an unprimeable number, because it can be changed into a prime (221488049) 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, 15772 + ... + 26300.

It is an arithmetic number, because the mean of its divisors is an integer number (21547890).

Almost surely, 2^221488044 is an apocalyptic number.

It is an amenable number.

221488044 is an abundant number, since it is smaller than the sum of its proper divisors (295661316).

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

221488044 is a wasteful number, since it uses less digits than its factorization.

221488044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12289 (or 12287 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 33.

The square root of 221488044 is about 14882.4743910413. The cubic root of 221488044 is about 605.0390831478.

The spelling of 221488044 in words is "two hundred twenty-one million, four hundred eighty-eight thousand, forty-four".