201012210 has 144 divisors (see below), whose sum is σ = 640224000. Its totient is φ = 43509312.

The previous prime is 201012187. The next prime is 201012221. The reversal of 201012210 is 12210102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201012192 and 201012201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 82591 + ... + 84989.

It is an arithmetic number, because the mean of its divisors is an integer number (4446000).

Almost surely, 2^201012210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201012210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320112000).

201012210 is an abundant number, since it is smaller than the sum of its proper divisors (439211790).

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

201012210 is a wasteful number, since it uses less digits than its factorization.

201012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 201012210 is about 14177.8774857170. The cubic root of 201012210 is about 585.7884612725.

Adding to 201012210 its reverse (12210102), we get a palindrome (213222312).

The spelling of 201012210 in words is "two hundred one million, twelve thousand, two hundred ten".