210111021210210 has 32 divisors (see below), whose sum is σ = 510341950319040. Its totient is φ = 55354550165568.

The previous prime is 210111021210193. The next prime is 210111021210253. The reversal of 210111021210210 is 12012120111012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 210111021210210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42190965625 + ... + 42190970604.

It is an arithmetic number, because the mean of its divisors is an integer number (15948185947470).

Almost surely, 2^{210111021210210} is an apocalyptic number.

210111021210210 is an abundant number, since it is smaller than the sum of its proper divisors (300230929108830).

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

210111021210210 is a wasteful number, since it uses less digits than its factorization.

210111021210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84381936322.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210111021210210 its reverse (12012120111012), we get a palindrome (222123141321222).

The spelling of 210111021210210 in words is "two hundred ten trillion, one hundred eleven billion, twenty-one million, two hundred ten thousand, two hundred ten".