2021020225 has 12 divisors (see below), whose sum is σ = 2864074624. Its totient is φ = 1385842320.

The previous prime is 2021020223. The next prime is 2021020229. The reversal of 2021020225 is 5220201202.

It is not a de Polignac number, because 2021020225 - 2¹ = 2021020223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021020199 and 2021020208.

It is not an unprimeable number, because it can be changed into a prime (2021020223) 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, 5774169 + ... + 5774518.

Almost surely, 2^2021020225 is an apocalyptic number.

2021020225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2021020225 is a deficient number, since it is larger than the sum of its proper divisors (843054399).

2021020225 is a wasteful number, since it uses less digits than its factorization.

2021020225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11548704 (or 11548699 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2021020225 is about 44955.7585299147. The cubic root of 2021020225 is about 1264.3196464417.

Adding to 2021020225 its reverse (5220201202), we get a palindrome (7241221427).

The spelling of 2021020225 in words is "two billion, twenty-one million, twenty thousand, two hundred twenty-five".