20021020022013 has 64 divisors (see below), whose sum is σ = 27900489830400. Its totient is φ = 12759763322880.

The previous prime is 20021020021999. The next prime is 20021020022021. The reversal of 20021020022013 is 31022002012002.

It is a happy number.

It is not a de Polignac number, because 20021020022013 - 2⁹ = 20021020021501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20021020021983 and 20021020022001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021020022063) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3184507756 + ... + 3184514042.

It is an arithmetic number, because the mean of its divisors is an integer number (435945153600).

Almost surely, 2^{20021020022013} is an apocalyptic number.

It is an amenable number.

20021020022013 is a deficient number, since it is larger than the sum of its proper divisors (7879469808387).

20021020022013 is a wasteful number, since it uses less digits than its factorization.

20021020022013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20021020022013 its reverse (31022002012002), we get a palindrome (51043022034015).

The spelling of 20021020022013 in words is "twenty trillion, twenty-one billion, twenty million, twenty-two thousand, thirteen".