2102020210 has 8 divisors (see below), whose sum is σ = 3783636396. Its totient is φ = 840808080.

The previous prime is 2102020183. The next prime is 2102020211. The reversal of 2102020210 is 120202012.

It can be written as a sum of positive squares in 2 ways, for example, as 2065429809 + 36590401 = 45447^2 + 6049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 210202021 = 2102020210 / (2 + 1 + 0 + 2 + 0 + 2 + 0 + 2 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (2102020211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105101001 + ... + 105101020.

Almost surely, 2^2102020210 is an apocalyptic number.

2102020210 is a deficient number, since it is larger than the sum of its proper divisors (1681616186).

2102020210 is a wasteful number, since it uses less digits than its factorization.

2102020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210202028.

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

The square root of 2102020210 is about 45847.7939491095. The cubic root of 2102020210 is about 1280.9896744632.

Adding to 2102020210 its reverse (120202012), we get a palindrome (2222222222).

The spelling of 2102020210 in words is "two billion, one hundred two million, twenty thousand, two hundred ten".