20010424121117 has 2 divisors, whose sum is σ = 20010424121118. Its totient is φ = 20010424121116.

The previous prime is 20010424121111. The next prime is 20010424121147. The reversal of 20010424121117 is 71112142401002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16962445865401 + 3047978255716 = 4118549^2 + 1745846^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010424121117 - 2¹⁴ = 20010424104733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010424121111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005212060558 + 10005212060559.

It is an arithmetic number, because the mean of its divisors is an integer number (10005212060559).

Almost surely, 2^{20010424121117} is an apocalyptic number.

It is an amenable number.

20010424121117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010424121117 is an equidigital number, since it uses as much as digits as its factorization.

20010424121117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 20010424121117 its reverse (71112142401002), we get a palindrome (91122566522119).

The spelling of 20010424121117 in words is "twenty trillion, ten billion, four hundred twenty-four million, one hundred twenty-one thousand, one hundred seventeen".