2033400220021 has 4 divisors (see below), whose sum is σ = 2037303100044. Its totient is φ = 2029497340000.

The previous prime is 2033400220001. The next prime is 2033400220063. The reversal of 2033400220021 is 1200220043302.

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 1053476432100 + 979923787921 = 1026390^2 + 989911^2 .

It is a cyclic number.

It is not a de Polignac number, because 2033400220021 - 2⁹ = 2033400219509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2033400220001) 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 3 ways as a sum of consecutive naturals, for example, 1951439230 + ... + 1951440271.

It is an arithmetic number, because the mean of its divisors is an integer number (509325775011).

Almost surely, 2^{2033400220021} is an apocalyptic number.

It is an amenable number.

2033400220021 is a deficient number, since it is larger than the sum of its proper divisors (3902880023).

2033400220021 is an equidigital number, since it uses as much as digits as its factorization.

2033400220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902880022.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 2033400220021 its reverse (1200220043302), we get a palindrome (3233620263323).

The spelling of 2033400220021 in words is "two trillion, thirty-three billion, four hundred million, two hundred twenty thousand, twenty-one".