21210101211202 has 16 divisors (see below), whose sum is σ = 31869353768472. Its totient is φ = 10586998379520.

The previous prime is 21210101211199. The next prime is 21210101211289. The reversal of 21210101211202 is 20211210101212.

It can be written as a sum of positive squares in 4 ways, for example, as 14330911213161 + 6879189998041 = 3785619^2 + 2622821^2 .

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 7 ways as a sum of consecutive naturals, for example, 959763 + ... + 6583414.

Almost surely, 2^{21210101211202} is an apocalyptic number.

21210101211202 is a deficient number, since it is larger than the sum of its proper divisors (10659252557270).

21210101211202 is a wasteful number, since it uses less digits than its factorization.

21210101211202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545573.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210101211202 its reverse (20211210101212), we get a palindrome (41421311312414).

The spelling of 21210101211202 in words is "twenty-one trillion, two hundred ten billion, one hundred one million, two hundred eleven thousand, two hundred two".