20133321 has 16 divisors (see below), whose sum is σ = 30610944. Its totient is φ = 11660544.

The previous prime is 20133301. The next prime is 20133329. The reversal of 20133321 is 12333102.

It is not a de Polignac number, because 20133321 - 2⁷ = 20133193 is a prime.

It is a super-2 number, since 2×20133321² = 810701228978082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20133321.

It is not an unprimeable number, because it can be changed into a prime (20133329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14521 + ... + 15846.

It is an arithmetic number, because the mean of its divisors is an integer number (1913184).

Almost surely, 2^20133321 is an apocalyptic number.

It is an amenable number.

20133321 is a deficient number, since it is larger than the sum of its proper divisors (10477623).

20133321 is a wasteful number, since it uses less digits than its factorization.

20133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30400.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20133321 is about 4487.0169377884. The cubic root of 20133321 is about 272.0435745141.

Adding to 20133321 its reverse (12333102), we get a palindrome (32466423).

The spelling of 20133321 in words is "twenty million, one hundred thirty-three thousand, three hundred twenty-one".