2021132323013 has 4 divisors (see below), whose sum is σ = 2021872938540. Its totient is φ = 2020391707488.

The previous prime is 2021132322973. The next prime is 2021132323051. The reversal of 2021132323013 is 3103232311202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1745986964164 + 275145358849 = 1321358^2 + 524543^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021132323013 - 2¹⁴ = 2021132306629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021132323013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021132323813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370303670 + ... + 370309127.

It is an arithmetic number, because the mean of its divisors is an integer number (505468234635).

Almost surely, 2^{2021132323013} is an apocalyptic number.

It is an amenable number.

2021132323013 is a deficient number, since it is larger than the sum of its proper divisors (740615527).

2021132323013 is an equidigital number, since it uses as much as digits as its factorization.

2021132323013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740615526.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2021132323013 its reverse (3103232311202), we get a palindrome (5124364634215).

The spelling of 2021132323013 in words is "two trillion, twenty-one billion, one hundred thirty-two million, three hundred twenty-three thousand, thirteen".