4424261220121 has 4 divisors (see below), whose sum is σ = 4496790092644. Its totient is φ = 4351732347600.

The previous prime is 4424261220079. The next prime is 4424261220179. The reversal of 4424261220121 is 1210221624244.

4424261220121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 324996907225 + 4099264312896 = 570085^2 + 2024664^2 .

It is a cyclic number.

It is not a de Polignac number, because 4424261220121 - 2¹¹ = 4424261218073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4424261220191) 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 3 ways as a sum of consecutive naturals, for example, 36264436170 + ... + 36264436291.

It is an arithmetic number, because the mean of its divisors is an integer number (1124197523161).

Almost surely, 2^{4424261220121} is an apocalyptic number.

It is an amenable number.

4424261220121 is a deficient number, since it is larger than the sum of its proper divisors (72528872523).

4424261220121 is an equidigital number, since it uses as much as digits as its factorization.

4424261220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72528872522.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 4424261220121 its reverse (1210221624244), we get a palindrome (5634482844365).

The spelling of 4424261220121 in words is "four trillion, four hundred twenty-four billion, two hundred sixty-one million, two hundred twenty thousand, one hundred twenty-one".