20021322333013 has 4 divisors (see below), whose sum is σ = 20095201751488. Its totient is φ = 19947442914540.

The previous prime is 20021322332993. The next prime is 20021322333017. The reversal of 20021322333013 is 31033322312002.

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 a de Polignac number, because none of the positive numbers 2^k-20021322333013 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 (20021322333017) 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, 36939708831 + ... + 36939709372.

It is an arithmetic number, because the mean of its divisors is an integer number (5023800437872).

Almost surely, 2^{20021322333013} is an apocalyptic number.

It is an amenable number.

20021322333013 is a deficient number, since it is larger than the sum of its proper divisors (73879418475).

20021322333013 is an equidigital number, since it uses as much as digits as its factorization.

20021322333013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73879418474.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20021322333013 its reverse (31033322312002), we get a palindrome (51054644645015).

The spelling of 20021322333013 in words is "twenty trillion, twenty-one billion, three hundred twenty-two million, three hundred thirty-three thousand, thirteen".