2021432033 has 4 divisors (see below), whose sum is σ = 2021571348. Its totient is φ = 2021292720.

The previous prime is 2021432011. The next prime is 2021432041. The reversal of 2021432033 is 3302341202.

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 1945515664 + 75916369 = 44108^2 + 8713^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021432033 - 2¹⁸ = 2021169889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021431996 and 2021432014.

It is not an unprimeable number, because it can be changed into a prime (2021432053) 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, 44978 + ... + 77883.

It is an arithmetic number, because the mean of its divisors is an integer number (505392837).

Almost surely, 2^2021432033 is an apocalyptic number.

It is an amenable number.

2021432033 is a deficient number, since it is larger than the sum of its proper divisors (139315).

2021432033 is a wasteful number, since it uses less digits than its factorization.

2021432033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139314.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2021432033 is about 44960.3384440109. The cubic root of 2021432033 is about 1264.4055142259.

Adding to 2021432033 its reverse (3302341202), we get a palindrome (5323773235).

The spelling of 2021432033 in words is "two billion, twenty-one million, four hundred thirty-two thousand, thirty-three".