243121222199 has 8 divisors (see below), whose sum is σ = 245741759760. Its totient is φ = 240513134400.

The previous prime is 243121222177. The next prime is 243121222237. The reversal of 243121222199 is 991222121342.

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

It is a cyclic number.

It is not a de Polignac number, because 243121222199 - 2²⁴ = 243104444983 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 (243121222129) 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, 3073172 + ... + 3151289.

It is an arithmetic number, because the mean of its divisors is an integer number (30717719970).

Almost surely, 2^243121222199 is an apocalyptic number.

243121222199 is a deficient number, since it is larger than the sum of its proper divisors (2620537561).

243121222199 is a wasteful number, since it uses less digits than its factorization.

243121222199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224881.

The product of its digits is 31104, while the sum is 38.

The spelling of 243121222199 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred ninety-nine".