20132122230221 has 2 divisors, whose sum is σ = 20132122230222. Its totient is φ = 20132122230220.

The previous prime is 20132122230191. The next prime is 20132122230271. The reversal of 20132122230221 is 12203222123102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17319830124100 + 2812292106121 = 4161710^2 + 1676989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132122230221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132122230271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066061115110 + 10066061115111.

It is an arithmetic number, because the mean of its divisors is an integer number (10066061115111).

Almost surely, 2^{20132122230221} is an apocalyptic number.

It is an amenable number.

20132122230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132122230221 is an equidigital number, since it uses as much as digits as its factorization.

20132122230221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20132122230221 its reverse (12203222123102), we get a palindrome (32335344353323).

The spelling of 20132122230221 in words is "twenty trillion, one hundred thirty-two billion, one hundred twenty-two million, two hundred thirty thousand, two hundred twenty-one".