21202010202 has 32 divisors (see below), whose sum is σ = 43190889984. Its totient is φ = 6937070000.

The previous prime is 21202010201. The next prime is 21202010209. The reversal of 21202010202 is 20201020212.

It is not an unprimeable number, because it can be changed into a prime (21202010201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12924 + ... + 206327.

It is an arithmetic number, because the mean of its divisors is an integer number (1349715312).

Almost surely, 2^21202010202 is an apocalyptic number.

21202010202 is an abundant number, since it is smaller than the sum of its proper divisors (21988879782).

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

21202010202 is a wasteful number, since it uses less digits than its factorization.

21202010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219554.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21202010202 its reverse (20201020212), we get a palindrome (41403030414).

It can be divided in two parts, 212020 and 10202, that added together give a palindrome (222222).

The spelling of 21202010202 in words is "twenty-one billion, two hundred two million, ten thousand, two hundred two".