20010111113 has 6 divisors (see below), whose sum is σ = 20917942794. Its totient is φ = 19140105776.

The previous prime is 20010111091. The next prime is 20010111139. The reversal of 20010111113 is 31111101002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13764686329 + 6245424784 = 117323^2 + 79028^2 .

It is not a de Polignac number, because 20010111113 - 2¹⁴ = 20010094729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010111094 and 20010111103.

It is not an unprimeable number, because it can be changed into a prime (20010111013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18912620 + ... + 18913677.

It is an arithmetic number, because the mean of its divisors is an integer number (3486323799).

Almost surely, 2^20010111113 is an apocalyptic number.

20010111113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20010111113 is a deficient number, since it is larger than the sum of its proper divisors (907831681).

20010111113 is an equidigital number, since it uses as much as digits as its factorization.

20010111113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37826343 (or 37826320 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 20010111113 its reverse (31111101002), we get a palindrome (51121212115).

The spelling of 20010111113 in words is "twenty billion, ten million, one hundred eleven thousand, one hundred thirteen".