20121300113 has 8 divisors (see below), whose sum is σ = 21415297608. Its totient is φ = 18839568384.

The previous prime is 20121300061. The next prime is 20121300131. The reversal of 20121300113 is 31100312102.

It can be written as a sum of positive squares in 4 ways, for example, as 4614077329 + 15507222784 = 67927^2 + 124528^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20121300113 - 2²² = 20117105809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20121300163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3063056 + ... + 3069617.

It is an arithmetic number, because the mean of its divisors is an integer number (2676912201).

Almost surely, 2^20121300113 is an apocalyptic number.

It is an amenable number.

20121300113 is a deficient number, since it is larger than the sum of its proper divisors (1293997495).

20121300113 is a wasteful number, since it uses less digits than its factorization.

20121300113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132883.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20121300113 its reverse (31100312102), we get a palindrome (51221612215).

The spelling of 20121300113 in words is "twenty billion, one hundred twenty-one million, three hundred thousand, one hundred thirteen".