210201020 has 24 divisors (see below), whose sum is σ = 444240384. Its totient is φ = 83543616.

The previous prime is 210200989. The next prime is 210201023. The reversal of 210201020 is 20102012.

It is a junction number, because it is equal to n+sod(n) for n = 210200989 and 210201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30332 + ... + 36611.

It is an arithmetic number, because the mean of its divisors is an integer number (18510016).

Almost surely, 2^210201020 is an apocalyptic number.

210201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210201020 is an abundant number, since it is smaller than the sum of its proper divisors (234039364).

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

210201020 is a wasteful number, since it uses less digits than its factorization.

210201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67109 (or 67107 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 210201020 is about 14498.3109361056. The cubic root of 210201020 is about 594.5817930767.

Adding to 210201020 its reverse (20102012), we get a palindrome (230303032).

The spelling of 210201020 in words is "two hundred ten million, two hundred one thousand, twenty".