2033400021 has 8 divisors (see below), whose sum is σ = 2717134464. Its totient is φ = 1352632800.

The previous prime is 2033400001. The next prime is 2033400029. The reversal of 2033400021 is 1200043302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2033400021 - 2⁹ = 2033399509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2033400029) 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 7 ways as a sum of consecutive naturals, for example, 740205 + ... + 742946.

It is an arithmetic number, because the mean of its divisors is an integer number (339641808).

Almost surely, 2^2033400021 is an apocalyptic number.

It is an amenable number.

2033400021 is a deficient number, since it is larger than the sum of its proper divisors (683734443).

2033400021 is a wasteful number, since it uses less digits than its factorization.

2033400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483611.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2033400021 is about 45093.2369762917. The cubic root of 2033400021 is about 1266.8959308542.

Adding to 2033400021 its reverse (1200043302), we get a palindrome (3233443323).

The spelling of 2033400021 in words is "two billion, thirty-three million, four hundred thousand, twenty-one".