202120100210 has 64 divisors (see below), whose sum is σ = 422609301504. Its totient is φ = 68170680000.

The previous prime is 202120100201. The next prime is 202120100239. The reversal of 202120100210 is 12001021202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202120100191 and 202120100200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 995885 + ... + 1181535.

It is an arithmetic number, because the mean of its divisors is an integer number (6603270336).

Almost surely, 2^202120100210 is an apocalyptic number.

202120100210 is an abundant number, since it is smaller than the sum of its proper divisors (220489201294).

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

202120100210 is a wasteful number, since it uses less digits than its factorization.

202120100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185919.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202120100210 its reverse (12001021202), we get a palindrome (214121121412).

The spelling of 202120100210 in words is "two hundred two billion, one hundred twenty million, one hundred thousand, two hundred ten".