20020110002021 has 16 divisors (see below), whose sum is σ = 20199481049088. Its totient is φ = 19841148615600.

The previous prime is 20020110001981. The next prime is 20020110002063. The reversal of 20020110002021 is 12020001102002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20020110002021 - 2²² = 20020105807717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020110001993 and 20020110002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020110004021) 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, 1117746056 + ... + 1117763966.

It is an arithmetic number, because the mean of its divisors is an integer number (1262467565568).

Almost surely, 2^{20020110002021} is an apocalyptic number.

It is an amenable number.

20020110002021 is a deficient number, since it is larger than the sum of its proper divisors (179371047067).

20020110002021 is a wasteful number, since it uses less digits than its factorization.

20020110002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28792.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20020110002021 its reverse (12020001102002), we get a palindrome (32040111104023).

The spelling of 20020110002021 in words is "twenty trillion, twenty billion, one hundred ten million, two thousand, twenty-one".