20020021110001 has 16 divisors (see below), whose sum is σ = 23017229726400. Its totient is φ = 17221324593600.

The previous prime is 20020021109971. The next prime is 20020021110031. The reversal of 20020021110001 is 10001112002002.

It is an interprime number because it is at equal distance from previous prime (20020021109971) and next prime (20020021110031).

It is a cyclic number.

It is not a de Polignac number, because 20020021110001 - 2¹³ = 20020021101809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20020021110001.

It is not an unprimeable number, because it can be changed into a prime (20020021110031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57600910 + ... + 57947431.

It is an arithmetic number, because the mean of its divisors is an integer number (1438576857900).

Almost surely, 2^{20020021110001} is an apocalyptic number.

It is an amenable number.

20020021110001 is a deficient number, since it is larger than the sum of its proper divisors (2997208616399).

20020021110001 is a wasteful number, since it uses less digits than its factorization.

20020021110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115549200.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20020021110001 its reverse (10001112002002), we get a palindrome (30021133112003).

The spelling of 20020021110001 in words is "twenty trillion, twenty billion, twenty-one million, one hundred ten thousand, one".