3233400021 has 6 divisors (see below), whose sum is σ = 4670466710. Its totient is φ = 2155600008.

The previous prime is 3233399957. The next prime is 3233400029. The reversal of 3233400021 is 1200043323.

3233400021 is a `hidden beast` number, since 323 + 340 + 0 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3170816100 + 62583921 = 56310^2 + 7911^2 .

It is not a de Polignac number, because 3233400021 - 2⁶ = 3233399957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3233399967 and 3233400003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3233400029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179633326 + ... + 179633343.

Almost surely, 2^3233400021 is an apocalyptic number.

It is an amenable number.

3233400021 is a deficient number, since it is larger than the sum of its proper divisors (1437066689).

3233400021 is a wasteful number, since it uses less digits than its factorization.

3233400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359266675 (or 359266672 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 3233400021 is about 56862.9934227877. The cubic root of 3233400021 is about 1478.7218117194.

Adding to 3233400021 its reverse (1200043323), we get a palindrome (4433443344).

The spelling of 3233400021 in words is "three billion, two hundred thirty-three million, four hundred thousand, twenty-one".