221833152 has 42 divisors (see below), whose sum is σ = 635846328. Its totient is φ = 73944192.

The previous prime is 221833147. The next prime is 221833159. The reversal of 221833152 is 251338122.

221833152 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221833159) 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, 191988 + ... + 193139.

Almost surely, 2^221833152 is an apocalyptic number.

It is an amenable number.

221833152 is an abundant number, since it is smaller than the sum of its proper divisors (414013176).

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

221833152 is a wasteful number, since it uses less digits than its factorization.

221833152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385145 (or 385132 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 221833152 is about 14894.0643210643. The cubic root of 221833152 is about 605.3531640192.

The spelling of 221833152 in words is "two hundred twenty-one million, eight hundred thirty-three thousand, one hundred fifty-two".