221210033 has 8 divisors (see below), whose sum is σ = 244375680. Its totient is φ = 198553680.

The previous prime is 221210009. The next prime is 221210051. The reversal of 221210033 is 330012122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221210033 - 2²⁰ = 220161457 is a prime.

It is a super-2 number, since 2×221210033² = 97867757399722178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221210053) 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, 126410 + ... + 128147.

It is an arithmetic number, because the mean of its divisors is an integer number (30546960).

Almost surely, 2^221210033 is an apocalyptic number.

It is an amenable number.

221210033 is a deficient number, since it is larger than the sum of its proper divisors (23165647).

221210033 is a wasteful number, since it uses less digits than its factorization.

221210033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254647.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221210033 is about 14873.1312439580. The cubic root of 221210033 is about 604.7858295268.

Adding to 221210033 its reverse (330012122), we get a palindrome (551222155).

The spelling of 221210033 in words is "two hundred twenty-one million, two hundred ten thousand, thirty-three".