2120020044421 has 4 divisors (see below), whose sum is σ = 2131863732000. Its totient is φ = 2108176356844.

The previous prime is 2120020044409. The next prime is 2120020044487. The reversal of 2120020044421 is 1244400200212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120020044421 - 2²¹ = 2120017947269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120020044392 and 2120020044401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120020044521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5921843521 + ... + 5921843878.

It is an arithmetic number, because the mean of its divisors is an integer number (532965933000).

Almost surely, 2^{2120020044421} is an apocalyptic number.

It is an amenable number.

2120020044421 is a deficient number, since it is larger than the sum of its proper divisors (11843687579).

2120020044421 is a wasteful number, since it uses less digits than its factorization.

2120020044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11843687578.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 2120020044421 its reverse (1244400200212), we get a palindrome (3364420244633).

The spelling of 2120020044421 in words is "two trillion, one hundred twenty billion, twenty million, forty-four thousand, four hundred twenty-one".