20400110421113 has 2 divisors, whose sum is σ = 20400110421114. Its totient is φ = 20400110421112.

The previous prime is 20400110421101. The next prime is 20400110421121. The reversal of 20400110421113 is 31112401100402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20393280555664 + 6829865449 = 4515892^2 + 82643^2 .

It is a cyclic number.

It is not a de Polignac number, because 20400110421113 - 2⁶ = 20400110421049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20400110421133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200055210556 + 10200055210557.

It is an arithmetic number, because the mean of its divisors is an integer number (10200055210557).

Almost surely, 2^{20400110421113} is an apocalyptic number.

It is an amenable number.

20400110421113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20400110421113 is an equidigital number, since it uses as much as digits as its factorization.

20400110421113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20400110421113 its reverse (31112401100402), we get a palindrome (51512511521515).

The spelling of 20400110421113 in words is "twenty trillion, four hundred billion, one hundred ten million, four hundred twenty-one thousand, one hundred thirteen".