221450531203 has 8 divisors (see below), whose sum is σ = 245188105920. Its totient is φ = 198313907880.

The previous prime is 221450531201. The next prime is 221450531209. The reversal of 221450531203 is 302135054122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221450531203 - 2¹ = 221450531201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221450531201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150237073 + ... + 150238546.

It is an arithmetic number, because the mean of its divisors is an integer number (30648513240).

Almost surely, 2^221450531203 is an apocalyptic number.

221450531203 is a deficient number, since it is larger than the sum of its proper divisors (23737574717).

221450531203 is a wasteful number, since it uses less digits than its factorization.

221450531203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300475697.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 221450531203 its reverse (302135054122), we get a palindrome (523585585325).

The spelling of 221450531203 in words is "two hundred twenty-one billion, four hundred fifty million, five hundred thirty-one thousand, two hundred three".