2021072205 has 16 divisors (see below), whose sum is σ = 3345223680. Its totient is φ = 1040735808.

The previous prime is 2021072203. The next prime is 2021072213. The reversal of 2021072205 is 5022701202.

It is a happy number.

It is not a de Polignac number, because 2021072205 - 2¹ = 2021072203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021072203) 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, 2322637 + ... + 2323506.

It is an arithmetic number, because the mean of its divisors is an integer number (209076480).

Almost surely, 2^2021072205 is an apocalyptic number.

It is an amenable number.

2021072205 is a deficient number, since it is larger than the sum of its proper divisors (1324151475).

2021072205 is a wasteful number, since it uses less digits than its factorization.

2021072205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646180.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2021072205 is about 44956.3366501320. The cubic root of 2021072205 is about 1264.3304856491.

Adding to 2021072205 its reverse (5022701202), we get a palindrome (7043773407).

The spelling of 2021072205 in words is "two billion, twenty-one million, seventy-two thousand, two hundred five".