2021133013 has 4 divisors (see below), whose sum is σ = 2021662240. Its totient is φ = 2020603788.

The previous prime is 2021133001. The next prime is 2021133017. The reversal of 2021133013 is 3103311202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021133013 - 2⁹ = 2021132501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021133017) 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, 258843 + ... + 266536.

It is an arithmetic number, because the mean of its divisors is an integer number (505415560).

Almost surely, 2^2021133013 is an apocalyptic number.

It is an amenable number.

2021133013 is a deficient number, since it is larger than the sum of its proper divisors (529227).

2021133013 is an equidigital number, since it uses as much as digits as its factorization.

2021133013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529226.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2021133013 is about 44957.0129457018. The cubic root of 2021133013 is about 1264.3431654925.

Adding to 2021133013 its reverse (3103311202), we get a palindrome (5124444215).

The spelling of 2021133013 in words is "two billion, twenty-one million, one hundred thirty-three thousand, thirteen".