243000025221 has 8 divisors (see below), whose sum is σ = 334451647744. Its totient is φ = 156774209760.

The previous prime is 243000025217. The next prime is 243000025259. The reversal of 243000025221 is 122520000342.

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

It is not a de Polignac number, because 243000025221 - 2² = 243000025217 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 (243000025271) 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 7 ways as a sum of consecutive naturals, for example, 1306451656 + ... + 1306451841.

It is an arithmetic number, because the mean of its divisors is an integer number (41806455968).

Almost surely, 2^243000025221 is an apocalyptic number.

It is an amenable number.

243000025221 is a deficient number, since it is larger than the sum of its proper divisors (91451622523).

243000025221 is a wasteful number, since it uses less digits than its factorization.

243000025221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612903531.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 243000025221 its reverse (122520000342), we get a palindrome (365520025563).

The spelling of 243000025221 in words is "two hundred forty-three billion, twenty-five thousand, two hundred twenty-one".