20133132203221 has 4 divisors (see below), whose sum is σ = 20133206995552. Its totient is φ = 20133057410892.

The previous prime is 20133132203207. The next prime is 20133132203227. The reversal of 20133132203221 is 12230223133102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20133132203221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133132203227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36990921 + ... + 37531246.

It is an arithmetic number, because the mean of its divisors is an integer number (5033301748888).

Almost surely, 2^{20133132203221} is an apocalyptic number.

It is an amenable number.

20133132203221 is a deficient number, since it is larger than the sum of its proper divisors (74792331).

20133132203221 is an equidigital number, since it uses as much as digits as its factorization.

20133132203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74792330.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20133132203221 its reverse (12230223133102), we get a palindrome (32363355336323).

The spelling of 20133132203221 in words is "twenty trillion, one hundred thirty-three billion, one hundred thirty-two million, two hundred three thousand, two hundred twenty-one".