2020110021 has 12 divisors (see below), whose sum is σ = 2918360640. Its totient is φ = 1346544360.

The previous prime is 2020110013. The next prime is 2020110023. The reversal of 2020110021 is 1200110202.

It is not a de Polignac number, because 2020110021 - 2³ = 2020110013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2020109985 and 2020110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020110023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77470 + ... + 100208.

It is an arithmetic number, because the mean of its divisors is an integer number (243196720).

Almost surely, 2^2020110021 is an apocalyptic number.

It is an amenable number.

2020110021 is a deficient number, since it is larger than the sum of its proper divisors (898250619).

2020110021 is a wasteful number, since it uses less digits than its factorization.

2020110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32616 (or 32613 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2020110021 is about 44945.6340593833. The cubic root of 2020110021 is about 1264.1298146614.

Adding to 2020110021 its reverse (1200110202), we get a palindrome (3220220223).

The spelling of 2020110021 in words is "two billion, twenty million, one hundred ten thousand, twenty-one".