20201020210 has 128 divisors (see below), whose sum is σ = 45008732160. Its totient is φ = 6373209600.

The previous prime is 20201020193. The next prime is 20201020237. The reversal of 20201020210 is 1202010202.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14776947 + ... + 14778313.

It is an arithmetic number, because the mean of its divisors is an integer number (351630720).

Almost surely, 2^20201020210 is an apocalyptic number.

20201020210 is an abundant number, since it is smaller than the sum of its proper divisors (24807711950).

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

20201020210 is a wasteful number, since it uses less digits than its factorization.

20201020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712.

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

Adding to 20201020210 its reverse (1202010202), we get a palindrome (21403030412).

The spelling of 20201020210 in words is "twenty billion, two hundred one million, twenty thousand, two hundred ten".