221210133 has 8 divisors (see below), whose sum is σ = 295243200. Its totient is φ = 147325248.

The previous prime is 221210131. The next prime is 221210167. The reversal of 221210133 is 331012122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221210133 - 2¹ = 221210131 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210131) 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, 33513 + ... + 39566.

It is an arithmetic number, because the mean of its divisors is an integer number (36905400).

Almost surely, 2^221210133 is an apocalyptic number.

It is an amenable number.

221210133 is a deficient number, since it is larger than the sum of its proper divisors (74033067).

221210133 is a wasteful number, since it uses less digits than its factorization.

221210133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74091.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 221210133 is about 14873.1346057245. The cubic root of 221210133 is about 604.7859206597.

Adding to 221210133 its reverse (331012122), we get a palindrome (552222255).

The spelling of 221210133 in words is "two hundred twenty-one million, two hundred ten thousand, one hundred thirty-three".