21012410113 has 2 divisors, whose sum is σ = 21012410114. Its totient is φ = 21012410112.

The previous prime is 21012410101. The next prime is 21012410119. The reversal of 21012410113 is 31101421012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18993525489 + 2018884624 = 137817^2 + 44932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21012410113 is a prime.

It is not a weakly prime, because it can be changed into another prime (21012410119) 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, 10506205056 + 10506205057.

It is an arithmetic number, because the mean of its divisors is an integer number (10506205057).

Almost surely, 2^21012410113 is an apocalyptic number.

It is an amenable number.

21012410113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21012410113 is an equidigital number, since it uses as much as digits as its factorization.

21012410113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21012410113 its reverse (31101421012), we get a palindrome (52113831125).

The spelling of 21012410113 in words is "twenty-one billion, twelve million, four hundred ten thousand, one hundred thirteen".