20340120401 has 2 divisors, whose sum is σ = 20340120402. Its totient is φ = 20340120400.

The previous prime is 20340120379. The next prime is 20340120413. The reversal of 20340120401 is 10402104302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14318515600 + 6021604801 = 119660^2 + 77599^2 .

It is a cyclic number.

It is not a de Polignac number, because 20340120401 - 2¹⁰ = 20340119377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20340120401.

It is not a weakly prime, because it can be changed into another prime (20340120701) 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, 10170060200 + 10170060201.

It is an arithmetic number, because the mean of its divisors is an integer number (10170060201).

Almost surely, 2^20340120401 is an apocalyptic number.

It is an amenable number.

20340120401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20340120401 is an equidigital number, since it uses as much as digits as its factorization.

20340120401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20340120401 its reverse (10402104302), we get a palindrome (30742224703).

The spelling of 20340120401 in words is "twenty billion, three hundred forty million, one hundred twenty thousand, four hundred one".