21203000322113 has 2 divisors, whose sum is σ = 21203000322114. Its totient is φ = 21203000322112.

The previous prime is 21203000322073. The next prime is 21203000322191. The reversal of 21203000322113 is 31122300030212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17353623029824 + 3849377292289 = 4165768^2 + 1961983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21203000322113 is a prime.

It is a super-3 number, since 3×21203000322113³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21203000324113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601500161056 + 10601500161057.

It is an arithmetic number, because the mean of its divisors is an integer number (10601500161057).

Almost surely, 2^{21203000322113} is an apocalyptic number.

It is an amenable number.

21203000322113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21203000322113 is an equidigital number, since it uses as much as digits as its factorization.

21203000322113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21203000322113 its reverse (31122300030212), we get a palindrome (52325300352325).

The spelling of 21203000322113 in words is "twenty-one trillion, two hundred three billion, three hundred twenty-two thousand, one hundred thirteen".