2133320021 has 16 divisors (see below), whose sum is σ = 2583995904. Its totient is φ = 1719331584.

The previous prime is 2133320009. The next prime is 2133320027. The reversal of 2133320021 is 1200233312.

It is not a de Polignac number, because 2133320021 - 2²² = 2129125717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133320027) 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 15 ways as a sum of consecutive naturals, for example, 123131 + ... + 139383.

It is an arithmetic number, because the mean of its divisors is an integer number (161499744).

Almost surely, 2^2133320021 is an apocalyptic number.

It is an amenable number.

2133320021 is a deficient number, since it is larger than the sum of its proper divisors (450675883).

2133320021 is a wasteful number, since it uses less digits than its factorization.

2133320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17380.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2133320021 is about 46187.8774247096. The cubic root of 2133320021 is about 1287.3165017777.

Adding to 2133320021 its reverse (1200233312), we get a palindrome (3333553333).

The spelling of 2133320021 in words is "two billion, one hundred thirty-three million, three hundred twenty thousand, twenty-one".