2120020033405 has 4 divisors (see below), whose sum is σ = 2544024040092. Its totient is φ = 1696016026720.

The previous prime is 2120020033381. The next prime is 2120020033441. The reversal of 2120020033405 is 5043300200212.

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 789416257081 + 1330603776324 = 888491^2 + 1153518^2 .

It is not a de Polignac number, because 2120020033405 - 2³⁷ = 1982581079933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212002003336 + ... + 212002003345.

It is an arithmetic number, because the mean of its divisors is an integer number (636006010023).

Almost surely, 2^{2120020033405} is an apocalyptic number.

It is an amenable number.

2120020033405 is a deficient number, since it is larger than the sum of its proper divisors (424004006687).

2120020033405 is an equidigital number, since it uses as much as digits as its factorization.

2120020033405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424004006686.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 2120020033405 its reverse (5043300200212), we get a palindrome (7163320233617).

The spelling of 2120020033405 in words is "two trillion, one hundred twenty billion, twenty million, thirty-three thousand, four hundred five".