20211331101113 has 4 divisors (see below), whose sum is σ = 20211416167908. Its totient is φ = 20211246034320.

The previous prime is 20211331101067. The next prime is 20211331101121. The reversal of 20211331101113 is 31110113311202.

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 6196251057529 + 14015080043584 = 2489227^2 + 3743672^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211331101113 - 2²⁴ = 20211314323897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211331103113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42176006 + ... + 42652527.

It is an arithmetic number, because the mean of its divisors is an integer number (5052854041977).

Almost surely, 2^{20211331101113} is an apocalyptic number.

It is an amenable number.

20211331101113 is a deficient number, since it is larger than the sum of its proper divisors (85066795).

20211331101113 is an equidigital number, since it uses as much as digits as its factorization.

20211331101113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85066794.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 20211331101113 its reverse (31110113311202), we get a palindrome (51321444412315).

The spelling of 20211331101113 in words is "twenty trillion, two hundred eleven billion, three hundred thirty-one million, one hundred one thousand, one hundred thirteen".