2021103020 has 12 divisors (see below), whose sum is σ = 4244316384. Its totient is φ = 808441200.

The previous prime is 2021103011. The next prime is 2021103043. The reversal of 2021103020 is 203011202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2021102992 and 2021103010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50527556 + ... + 50527595.

It is an arithmetic number, because the mean of its divisors is an integer number (353693032).

Almost surely, 2^2021103020 is an apocalyptic number.

2021103020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021103020 is an abundant number, since it is smaller than the sum of its proper divisors (2223213364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021103020 is a wasteful number, since it uses less digits than its factorization.

2021103020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101055160 (or 101055158 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2021103020 is about 44956.6793702560. The cubic root of 2021103020 is about 1264.3369113054.

Adding to 2021103020 its reverse (203011202), we get a palindrome (2224114222).

The spelling of 2021103020 in words is "two billion, twenty-one million, one hundred three thousand, twenty".