221414145 has 16 divisors (see below), whose sum is σ = 362904192. Its totient is φ = 115207040.

The previous prime is 221414143. The next prime is 221414153. The reversal of 221414145 is 541414122.

It is not a de Polignac number, because 221414145 - 2¹ = 221414143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221414143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179397 + ... + 180626.

It is an arithmetic number, because the mean of its divisors is an integer number (22681512).

Almost surely, 2^221414145 is an apocalyptic number.

It is an amenable number.

221414145 is a deficient number, since it is larger than the sum of its proper divisors (141490047).

221414145 is a wasteful number, since it uses less digits than its factorization.

221414145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360072.

The product of its digits is 1280, while the sum is 24.

The square root of 221414145 is about 14879.9914314491. The cubic root of 221414145 is about 604.9717856751.

Adding to 221414145 its reverse (541414122), we get a palindrome (762828267).

The spelling of 221414145 in words is "two hundred twenty-one million, four hundred fourteen thousand, one hundred forty-five".