2021020210 has 64 divisors (see below), whose sum is σ = 4147697664. Its totient is φ = 702475200.

The previous prime is 2021020181. The next prime is 2021020213. The reversal of 2021020210 is 120201202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (2021020213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217765 + ... + 226855.

It is an arithmetic number, because the mean of its divisors is an integer number (64807776).

Almost surely, 2^2021020210 is an apocalyptic number.

2021020210 is an abundant number, since it is smaller than the sum of its proper divisors (2126677454).

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

2021020210 is a wasteful number, since it uses less digits than its factorization.

2021020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9199.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2021020210 is about 44955.7583630840. The cubic root of 2021020210 is about 1264.3196433138.

Adding to 2021020210 its reverse (120201202), we get a palindrome (2141221412).

The spelling of 2021020210 in words is "two billion, twenty-one million, twenty thousand, two hundred ten".