221181048 has 48 divisors (see below), whose sum is σ = 653491800. Its totient is φ = 67024320.

The previous prime is 221181047. The next prime is 221181061. The reversal of 221181048 is 840181122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221181047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138843 + ... + 140426.

Almost surely, 2^221181048 is an apocalyptic number.

It is an amenable number.

221181048 is an abundant number, since it is smaller than the sum of its proper divisors (432310752).

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

221181048 is a wasteful number, since it uses less digits than its factorization.

221181048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279292 (or 279285 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 221181048 is about 14872.1568039071. The cubic root of 221181048 is about 604.7594134812.

The spelling of 221181048 in words is "two hundred twenty-one million, one hundred eighty-one thousand, forty-eight".