20132334221 has 2 divisors, whose sum is σ = 20132334222. Its totient is φ = 20132334220.

The previous prime is 20132334163. The next prime is 20132334223. The reversal of 20132334221 is 12243323102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20131636996 + 697225 = 141886^2 + 835^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132334221 - 2¹⁴ = 20132317837 is a prime.

Together with 20132334223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132334223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066167110 + 10066167111.

It is an arithmetic number, because the mean of its divisors is an integer number (10066167111).

Almost surely, 2^20132334221 is an apocalyptic number.

It is an amenable number.

20132334221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132334221 is an equidigital number, since it uses as much as digits as its factorization.

20132334221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20132334221 its reverse (12243323102), we get a palindrome (32375657323).

The spelling of 20132334221 in words is "twenty billion, one hundred thirty-two million, three hundred thirty-four thousand, two hundred twenty-one".