21202001010202 has 8 divisors (see below), whose sum is σ = 31967783907156. Its totient is φ = 10546073041152.

The previous prime is 21202001010193. The next prime is 21202001010257. The reversal of 21202001010202 is 20201010020212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19124537131921 + 2077463878281 = 4373161^2 + 1441341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 27463731493 + ... + 27463732264.

Almost surely, 2^{21202001010202} is an apocalyptic number.

21202001010202 is a deficient number, since it is larger than the sum of its proper divisors (10765782896954).

21202001010202 is a wasteful number, since it uses less digits than its factorization.

21202001010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54927463952.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21202001010202 its reverse (20201010020212), we get a palindrome (41403011030414).

It can be divided in two parts, 212020010 and 10202, that added together give a palindrome (212030212).

The spelling of 21202001010202 in words is "twenty-one trillion, two hundred two billion, one million, ten thousand, two hundred two".