20320133102251 has 2 divisors, whose sum is σ = 20320133102252. Its totient is φ = 20320133102250.

The previous prime is 20320133102233. The next prime is 20320133102351. The reversal of 20320133102251 is 15220133102302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20320133102251 - 2⁵ = 20320133102219 is a prime.

It is not a weakly prime, because it can be changed into another prime (20320133102221) 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 as a sum of consecutive naturals, namely, 10160066551125 + 10160066551126.

It is an arithmetic number, because the mean of its divisors is an integer number (10160066551126).

Almost surely, 2^{20320133102251} is an apocalyptic number.

20320133102251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320133102251 is an equidigital number, since it uses as much as digits as its factorization.

20320133102251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 20320133102251 its reverse (15220133102302), we get a palindrome (35540266204553).

The spelling of 20320133102251 in words is "twenty trillion, three hundred twenty billion, one hundred thirty-three million, one hundred two thousand, two hundred fifty-one".