2021023013213 has 4 divisors (see below), whose sum is σ = 2068023548448. Its totient is φ = 1974022477980.

The previous prime is 2021023013209. The next prime is 2021023013293. The reversal of 2021023013213 is 3123103201202.

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 2021023013213 - 2² = 2021023013209 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 (2021023013293) 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, 23500267553 + ... + 23500267638.

It is an arithmetic number, because the mean of its divisors is an integer number (517005887112).

Almost surely, 2^{2021023013213} is an apocalyptic number.

It is an amenable number.

2021023013213 is a deficient number, since it is larger than the sum of its proper divisors (47000535235).

2021023013213 is an equidigital number, since it uses as much as digits as its factorization.

2021023013213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47000535234.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2021023013213 its reverse (3123103201202), we get a palindrome (5144126214415).

The spelling of 2021023013213 in words is "two trillion, twenty-one billion, twenty-three million, thirteen thousand, two hundred thirteen".