221035450 has 24 divisors (see below), whose sum is σ = 412912188. Its totient is φ = 88030080.

The previous prime is 221035439. The next prime is 221035471. The reversal of 221035450 is 54530122.

It can be written as a sum of positive squares in 6 ways, for example, as 35176761 + 185858689 = 5931^2 + 13633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2164 + ... + 21136.

Almost surely, 2^221035450 is an apocalyptic number.

221035450 is a deficient number, since it is larger than the sum of its proper divisors (191876738).

221035450 is a wasteful number, since it uses less digits than its factorization.

221035450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19218 (or 19213 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 221035450 is about 14867.2610120358. The cubic root of 221035450 is about 604.6266849770.

Adding to 221035450 its reverse (54530122), we get a palindrome (275565572).

The spelling of 221035450 in words is "two hundred twenty-one million, thirty-five thousand, four hundred fifty".