221441401 has 8 divisors (see below), whose sum is σ = 238523904. Its totient is φ = 204980160.

The previous prime is 221441399. The next prime is 221441413. The reversal of 221441401 is 104144122.

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 221441401 - 2¹ = 221441399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221441431) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 154576 + ... + 156001.

It is an arithmetic number, because the mean of its divisors is an integer number (29815488).

Almost surely, 2^221441401 is an apocalyptic number.

It is an amenable number.

221441401 is a deficient number, since it is larger than the sum of its proper divisors (17082503).

221441401 is a wasteful number, since it uses less digits than its factorization.

221441401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310631.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 221441401 is about 14880.9072640078. The cubic root of 221441401 is about 604.9966085915.

Adding to 221441401 its reverse (104144122), we get a palindrome (325585523).

The spelling of 221441401 in words is "two hundred twenty-one million, four hundred forty-one thousand, four hundred one".