202102212102 has 64 divisors (see below), whose sum is σ = 472079370240. Its totient is φ = 56478635136.

The previous prime is 202102212043. The next prime is 202102212133. The reversal of 202102212102 is 201212201202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3120424 + ... + 3184532.

It is an arithmetic number, because the mean of its divisors is an integer number (7376240160).

Almost surely, 2^202102212102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202102212102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236039685120).

202102212102 is an abundant number, since it is smaller than the sum of its proper divisors (269977158138).

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

202102212102 is a wasteful number, since it uses less digits than its factorization.

202102212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65765.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202102212102 its reverse (201212201202), we get a palindrome (403314413304).

The spelling of 202102212102 in words is "two hundred two billion, one hundred two million, two hundred twelve thousand, one hundred two".