20120201113 has 4 divisors (see below), whose sum is σ = 20136573540. Its totient is φ = 20103828688.

The previous prime is 20120201081. The next prime is 20120201137. The reversal of 20120201113 is 31110202102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18988013209 + 1132187904 = 137797^2 + 33648^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120201113 - 2⁵ = 20120201081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120201093 and 20120201102.

It is not an unprimeable number, because it can be changed into a prime (20120201513) 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 in 3 ways as a sum of consecutive naturals, for example, 8184370 + ... + 8186827.

It is an arithmetic number, because the mean of its divisors is an integer number (5034143385).

Almost surely, 2^20120201113 is an apocalyptic number.

It is an amenable number.

20120201113 is a deficient number, since it is larger than the sum of its proper divisors (16372427).

20120201113 is a wasteful number, since it uses less digits than its factorization.

20120201113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16372426.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20120201113 its reverse (31110202102), we get a palindrome (51230403215).

The spelling of 20120201113 in words is "twenty billion, one hundred twenty million, two hundred one thousand, one hundred thirteen".