20401322113 has 2 divisors, whose sum is σ = 20401322114. Its totient is φ = 20401322112.

The previous prime is 20401322099. The next prime is 20401322131. The reversal of 20401322113 is 31122310402.

It is a happy number.

Together with next prime (20401322131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13784638464 + 6616683649 = 117408^2 + 81343^2 .

It is a cyclic number.

It is not a de Polignac number, because 20401322113 - 2⁹ = 20401321601 is a prime.

It is not a weakly prime, because it can be changed into another prime (20401322813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200661056 + 10200661057.

It is an arithmetic number, because the mean of its divisors is an integer number (10200661057).

Almost surely, 2^20401322113 is an apocalyptic number.

It is an amenable number.

20401322113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401322113 is an equidigital number, since it uses as much as digits as its factorization.

20401322113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20401322113 its reverse (31122310402), we get a palindrome (51523632515).

The spelling of 20401322113 in words is "twenty billion, four hundred one million, three hundred twenty-two thousand, one hundred thirteen".