20320122133021 has 2 divisors, whose sum is σ = 20320122133022. Its totient is φ = 20320122133020.

The previous prime is 20320122133013. The next prime is 20320122133121. The reversal of 20320122133021 is 12033122102302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16435005188121 + 3885116944900 = 4054011^2 + 1971070^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320122133021 - 2³ = 20320122133013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20320122132983 and 20320122133001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20320122133121) 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, 10160061066510 + 10160061066511.

It is an arithmetic number, because the mean of its divisors is an integer number (10160061066511).

Almost surely, 2^{20320122133021} is an apocalyptic number.

It is an amenable number.

20320122133021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320122133021 is an equidigital number, since it uses as much as digits as its factorization.

20320122133021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20320122133021 its reverse (12033122102302), we get a palindrome (32353244235323).

The spelling of 20320122133021 in words is "twenty trillion, three hundred twenty billion, one hundred twenty-two million, one hundred thirty-three thousand, twenty-one".