2021211013 has 4 divisors (see below), whose sum is σ = 2127590560. Its totient is φ = 1914831468.

The previous prime is 2021211011. The next prime is 2021211047. The reversal of 2021211013 is 3101121202.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3101121202 = 2 ⋅1550560601.

It is a cyclic number.

It is not a de Polignac number, because 2021211013 - 2¹ = 2021211011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021210984 and 2021211002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021211011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53189745 + ... + 53189782.

It is an arithmetic number, because the mean of its divisors is an integer number (531897640).

Almost surely, 2^2021211013 is an apocalyptic number.

It is an amenable number.

2021211013 is a deficient number, since it is larger than the sum of its proper divisors (106379547).

2021211013 is a wasteful number, since it uses less digits than its factorization.

2021211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106379546.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2021211013 is about 44957.8804326894. The cubic root of 2021211013 is about 1264.3594298844.

Adding to 2021211013 its reverse (3101121202), we get a palindrome (5122332215).

The spelling of 2021211013 in words is "two billion, twenty-one million, two hundred eleven thousand, thirteen".