2021113 has 8 divisors (see below), whose sum is σ = 2176200. Its totient is φ = 1870080.

The previous prime is 2021099. The next prime is 2021119. The reversal of 2021113 is 3111202.

It can be written as a sum of positive squares in 4 ways, for example, as 310249 + 1710864 = 557^2 + 1308^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2021113 - 2⁵ = 2021081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021113.

It is not an unprimeable number, because it can be changed into a prime (2021119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63 + ... + 2011.

It is an arithmetic number, because the mean of its divisors is an integer number (272025).

2^2021113 is an apocalyptic number.

It is an amenable number.

2021113 is a deficient number, since it is larger than the sum of its proper divisors (155087).

2021113 is a wasteful number, since it uses less digits than its factorization.

2021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2021113 is about 1421.6585384684. The cubic root of 2021113 is about 126.4338992357.

Adding to 2021113 its reverse (3111202), we get a palindrome (5132315).

The spelling of 2021113 in words is "two million, twenty-one thousand, one hundred thirteen".