20331022100113 has 4 divisors (see below), whose sum is σ = 20410131135780. Its totient is φ = 20251913064448.

The previous prime is 20331022100111. The next prime is 20331022100141. The reversal of 20331022100113 is 31100122013302.

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 17402638692609 + 2928383407504 = 4171647^2 + 1711252^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331022100113 - 2¹ = 20331022100111 is a prime.

It is a super-2 number, since 2×20331022100113² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331022100111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39554517448 + ... + 39554517961.

It is an arithmetic number, because the mean of its divisors is an integer number (5102532783945).

Almost surely, 2^{20331022100113} is an apocalyptic number.

It is an amenable number.

20331022100113 is a deficient number, since it is larger than the sum of its proper divisors (79109035667).

20331022100113 is an equidigital number, since it uses as much as digits as its factorization.

20331022100113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79109035666.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20331022100113 its reverse (31100122013302), we get a palindrome (51431144113415).

The spelling of 20331022100113 in words is "twenty trillion, three hundred thirty-one billion, twenty-two million, one hundred thousand, one hundred thirteen".