21000200120113 has 2 divisors, whose sum is σ = 21000200120114. Its totient is φ = 21000200120112.

The previous prime is 21000200120093. The next prime is 21000200120233. The reversal of 21000200120113 is 31102100200012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20390345331489 + 609854788624 = 4515567^2 + 780932^2 .

It is a cyclic number.

It is not a de Polignac number, because 21000200120113 - 2²¹ = 21000198022961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21000200120093 and 21000200120102.

It is not a weakly prime, because it can be changed into another prime (21000200120513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500100060056 + 10500100060057.

It is an arithmetic number, because the mean of its divisors is an integer number (10500100060057).

Almost surely, 2^{21000200120113} is an apocalyptic number.

It is an amenable number.

21000200120113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000200120113 is an equidigital number, since it uses as much as digits as its factorization.

21000200120113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21000200120113 its reverse (31102100200012), we get a palindrome (52102300320125).

The spelling of 21000200120113 in words is "twenty-one trillion, two hundred million, one hundred twenty thousand, one hundred thirteen".