221140513 has 16 divisors (see below), whose sum is σ = 245295360. Its totient is φ = 197683200.

The previous prime is 221140489. The next prime is 221140519. The reversal of 221140513 is 315041122.

It is not a de Polignac number, because 221140513 - 2⁵ = 221140481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221140519) 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, 344673 + ... + 345313.

It is an arithmetic number, because the mean of its divisors is an integer number (15330960).

Almost surely, 2^221140513 is an apocalyptic number.

It is an amenable number.

221140513 is a deficient number, since it is larger than the sum of its proper divisors (24154847).

221140513 is a wasteful number, since it uses less digits than its factorization.

221140513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 221140513 is about 14870.7939599740. The cubic root of 221140513 is about 604.7224672468.

Adding to 221140513 its reverse (315041122), we get a palindrome (536181635).

It can be divided in two parts, 2211 and 40513, that added together give a palindrome (42724).

The spelling of 221140513 in words is "two hundred twenty-one million, one hundred forty thousand, five hundred thirteen".