20113331303321 has 2 divisors, whose sum is σ = 20113331303322. Its totient is φ = 20113331303320.

The previous prime is 20113331303267. The next prime is 20113331303333. The reversal of 20113331303321 is 12330313331102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16756414771600 + 3356916531721 = 4093460^2 + 1832189^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113331303321 - 2²² = 20113327109017 is a prime.

It is a super-2 number, since 2×20113331303321² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20113331303921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056665651660 + 10056665651661.

It is an arithmetic number, because the mean of its divisors is an integer number (10056665651661).

Almost surely, 2^{20113331303321} is an apocalyptic number.

It is an amenable number.

20113331303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113331303321 is an equidigital number, since it uses as much as digits as its factorization.

20113331303321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 20113331303321 its reverse (12330313331102), we get a palindrome (32443644634423).

The spelling of 20113331303321 in words is "twenty trillion, one hundred thirteen billion, three hundred thirty-one million, three hundred three thousand, three hundred twenty-one".