2021212443013 has 8 divisors (see below), whose sum is σ = 2146858425432. Its totient is φ = 1896316586496.

The previous prime is 2021212442981. The next prime is 2021212443023. The reversal of 2021212443013 is 3103442121202.

It can be written as a sum of positive squares in 4 ways, for example, as 454514627329 + 1566697815684 = 674177^2 + 1251678^2 .

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 2021212443013 - 2⁵ = 2021212442981 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 (2021212443023) 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, 187525920 + ... + 187536697.

It is an arithmetic number, because the mean of its divisors is an integer number (268357303179).

Almost surely, 2^{2021212443013} is an apocalyptic number.

It is an amenable number.

2021212443013 is a deficient number, since it is larger than the sum of its proper divisors (125645982419).

2021212443013 is a wasteful number, since it uses less digits than its factorization.

2021212443013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375062951.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2021212443013 its reverse (3103442121202), we get a palindrome (5124654564215).

The spelling of 2021212443013 in words is "two trillion, twenty-one billion, two hundred twelve million, four hundred forty-three thousand, thirteen".