221450411 has 8 divisors (see below), whose sum is σ = 272554464. Its totient is φ = 175213440.

The previous prime is 221450357. The next prime is 221450431. The reversal of 221450411 is 114054122.

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 221450411 - 2¹⁰ = 221449387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221450431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216670 + ... + 1216851.

It is an arithmetic number, because the mean of its divisors is an integer number (34069308).

Almost surely, 2^221450411 is an apocalyptic number.

221450411 is a deficient number, since it is larger than the sum of its proper divisors (51104053).

221450411 is a wasteful number, since it uses less digits than its factorization.

221450411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433541.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 221450411 is about 14881.2099978463. The cubic root of 221450411 is about 605.0048138405.

It can be divided in two parts, 2214 and 50411, that added together give a palindrome (52625).

The spelling of 221450411 in words is "two hundred twenty-one million, four hundred fifty thousand, four hundred eleven".