4224421100421 has 24 divisors (see below), whose sum is σ = 6368177911680. Its totient is φ = 2693438374176.

The previous prime is 4224421100387. The next prime is 4224421100429. The reversal of 4224421100421 is 1240011244224.

4224421100421 is a `hidden beast` number, since 4 + 2 + 24 + 4 + 211 + 0 + 0 + 421 = 666.

It is not a de Polignac number, because 4224421100421 - 2⁶ = 4224421100357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224421100429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80601 + ... + 2907806.

It is an arithmetic number, because the mean of its divisors is an integer number (265340746320).

Almost surely, 2^{4224421100421} is an apocalyptic number.

It is an amenable number.

4224421100421 is a deficient number, since it is larger than the sum of its proper divisors (2143756811259).

4224421100421 is a wasteful number, since it uses less digits than its factorization.

4224421100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995265 (or 2995262 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 4224421100421 its reverse (1240011244224), we get a palindrome (5464432344645).

The spelling of 4224421100421 in words is "four trillion, two hundred twenty-four billion, four hundred twenty-one million, one hundred thousand, four hundred twenty-one".