20120044421 has 8 divisors (see below), whose sum is σ = 20772396288. Its totient is φ = 19467900000.

The previous prime is 20120044379. The next prime is 20120044423. The reversal of 20120044421 is 12444002102.

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 20120044421 - 2²⁶ = 20052935557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120044393 and 20120044402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120044423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158921 + ... + 255921.

It is an arithmetic number, because the mean of its divisors is an integer number (2596549536).

Almost surely, 2^20120044421 is an apocalyptic number.

It is an amenable number.

20120044421 is a deficient number, since it is larger than the sum of its proper divisors (652351867).

20120044421 is an equidigital number, since it uses as much as digits as its factorization.

20120044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103723.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20120044421 its reverse (12444002102), we get a palindrome (32564046523).

The spelling of 20120044421 in words is "twenty billion, one hundred twenty million, forty-four thousand, four hundred twenty-one".