221199458 has 8 divisors (see below), whose sum is σ = 332997852. Its totient is φ = 110200176.

The previous prime is 221199449. The next prime is 221199493. The reversal of 221199458 is 854991122.

221199458 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 220017889 + 1181569 = 14833^2 + 1087^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199085 + ... + 200192.

Almost surely, 2^221199458 is an apocalyptic number.

221199458 is a deficient number, since it is larger than the sum of its proper divisors (111798394).

221199458 is a wasteful number, since it uses less digits than its factorization.

221199458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399556.

The product of its digits is 51840, while the sum is 41.

The square root of 221199458 is about 14872.7757328617. The cubic root of 221199458 is about 604.7761920614.

The spelling of 221199458 in words is "two hundred twenty-one million, one hundred ninety-nine thousand, four hundred fifty-eight".