221443540153 has 16 divisors (see below), whose sum is σ = 247503364416. Its totient is φ = 196383579840.

The previous prime is 221443540127. The next prime is 221443540177. The reversal of 221443540153 is 351045344122.

It is a cyclic number.

It is not a de Polignac number, because 221443540153 - 2¹³ = 221443531961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221443540453) 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 15 ways as a sum of consecutive naturals, for example, 83275 + ... + 670687.

It is an arithmetic number, because the mean of its divisors is an integer number (15468960276).

Almost surely, 2^221443540153 is an apocalyptic number.

It is an amenable number.

221443540153 is a deficient number, since it is larger than the sum of its proper divisors (26059824263).

221443540153 is a wasteful number, since it uses less digits than its factorization.

221443540153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588264.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 221443540153 its reverse (351045344122), we get a palindrome (572488884275).

The spelling of 221443540153 in words is "two hundred twenty-one billion, four hundred forty-three million, five hundred forty thousand, one hundred fifty-three".