221201488 has 40 divisors (see below), whose sum is σ = 450828288. Its totient is φ = 104936832.

The previous prime is 221201483. The next prime is 221201521. The reversal of 221201488 is 884102122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201483) 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, 44370 + ... + 49102.

Almost surely, 2^221201488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221201488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225414144).

221201488 is an abundant number, since it is smaller than the sum of its proper divisors (229626800).

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

221201488 is a wasteful number, since it uses less digits than its factorization.

221201488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891 (or 4885 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 221201488 is about 14872.8439782040. The cubic root of 221201488 is about 604.7780421141.

The spelling of 221201488 in words is "two hundred twenty-one million, two hundred one thousand, four hundred eighty-eight".