11211212211202 has 8 divisors (see below), whose sum is σ = 16821546136956. Its totient is φ = 5604030165552.

The previous prime is 11211212211187. The next prime is 11211212211253. The reversal of 11211212211202 is 20211221211211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9364573105281 + 1846639105921 = 3060159^2 + 1358911^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 11211212211202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787961133 + ... + 787975360.

Almost surely, 2^{11211212211202} is an apocalyptic number.

11211212211202 is a deficient number, since it is larger than the sum of its proper divisors (5610333925754).

11211212211202 is a wasteful number, since it uses less digits than its factorization.

11211212211202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575940052.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11211212211202 its reverse (20211221211211), we get a palindrome (31422433422413).

Subtracting 11211212211202 from its reverse (20211221211211), we obtain a palindrome (9000009000009).

The spelling of 11211212211202 in words is "eleven trillion, two hundred eleven billion, two hundred twelve million, two hundred eleven thousand, two hundred two".