221414245 has 16 divisors (see below), whose sum is σ = 295368192. Its totient is φ = 158230080.

The previous prime is 221414243. The next prime is 221414251. The reversal of 221414245 is 542414122.

It is not a de Polignac number, because 221414245 - 2¹ = 221414243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221414243) 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 15 ways as a sum of consecutive naturals, for example, 52927 + ... + 56956.

It is an arithmetic number, because the mean of its divisors is an integer number (18460512).

Almost surely, 2^221414245 is an apocalyptic number.

It is an amenable number.

221414245 is a deficient number, since it is larger than the sum of its proper divisors (73953947).

221414245 is a wasteful number, since it uses less digits than its factorization.

221414245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109932.

The product of its digits is 2560, while the sum is 25.

The square root of 221414245 is about 14879.9947916658. The cubic root of 221414245 is about 604.9718767521.

Adding to 221414245 its reverse (542414122), we get a palindrome (763828367).

The spelling of 221414245 in words is "two hundred twenty-one million, four hundred fourteen thousand, two hundred forty-five".