4243222124221 has 8 divisors (see below), whose sum is σ = 4357966488320. Its totient is φ = 4128481059408.

The previous prime is 4243222124201. The next prime is 4243222124243. The reversal of 4243222124221 is 1224212223424.

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 4243222124221 - 2¹¹ = 4243222122173 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 (4243222124201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902460 + ... + 3479338.

It is an arithmetic number, because the mean of its divisors is an integer number (544745811040).

Almost surely, 2^{4243222124221} is an apocalyptic number.

It is an amenable number.

4243222124221 is a deficient number, since it is larger than the sum of its proper divisors (114744364099).

4243222124221 is a wasteful number, since it uses less digits than its factorization.

4243222124221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649643.

The product of its digits is 24576, while the sum is 31.

Adding to 4243222124221 its reverse (1224212223424), we get a palindrome (5467434347645).

The spelling of 4243222124221 in words is "four trillion, two hundred forty-three billion, two hundred twenty-two million, one hundred twenty-four thousand, two hundred twenty-one".