2021113113 has 8 divisors (see below), whose sum is σ = 2731733088. Its totient is φ = 1328950944.

The previous prime is 2021113111. The next prime is 2021113147. The reversal of 2021113113 is 3113111202.

It is a happy number.

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

It is not a de Polignac number, because 2021113113 - 2¹ = 2021113111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021113092 and 2021113101.

It is not an unprimeable number, because it can be changed into a prime (2021113111) 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 7 ways as a sum of consecutive naturals, for example, 4614195 + ... + 4614632.

It is an arithmetic number, because the mean of its divisors is an integer number (341466636).

Almost surely, 2^2021113113 is an apocalyptic number.

It is an amenable number.

2021113113 is a deficient number, since it is larger than the sum of its proper divisors (710619975).

2021113113 is an equidigital number, since it uses as much as digits as its factorization.

2021113113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9228903.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2021113113 is about 44956.7916226236. The cubic root of 2021113113 is about 1264.3390159204.

Adding to 2021113113 its reverse (3113111202), we get a palindrome (5134224315).

The spelling of 2021113113 in words is "two billion, twenty-one million, one hundred thirteen thousand, one hundred thirteen".