221148882 has 12 divisors (see below), whose sum is σ = 479155950. Its totient is φ = 73716288.

The previous prime is 221148881. The next prime is 221148911. The reversal of 221148882 is 288841122.

It can be written as a sum of positive squares in only one way, i.e., 112593321 + 108555561 = 10611^2 + 10419^2 .

It is not an unprimeable number, because it can be changed into a prime (221148881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6143007 + ... + 6143042.

Almost surely, 2^221148882 is an apocalyptic number.

221148882 is an abundant number, since it is smaller than the sum of its proper divisors (258007068).

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

221148882 is a wasteful number, since it uses less digits than its factorization.

221148882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12286057 (or 12286054 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 221148882 is about 14871.0753478019. The cubic root of 221148882 is about 604.7300956673.

The spelling of 221148882 in words is "two hundred twenty-one million, one hundred forty-eight thousand, eight hundred eighty-two".