11121211222102 has 4 divisors (see below), whose sum is σ = 16681816833156. Its totient is φ = 5560605611050.

The previous prime is 11121211222097. The next prime is 11121211222133. The reversal of 11121211222102 is 20122211212111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11121211222102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780302805524 + ... + 2780302805527.

It is an arithmetic number, because the mean of its divisors is an integer number (4170454208289).

Almost surely, 2^{11121211222102} is an apocalyptic number.

11121211222102 is a deficient number, since it is larger than the sum of its proper divisors (5560605611054).

11121211222102 is an equidigital number, since it uses as much as digits as its factorization.

11121211222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560605611053.

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

Adding to 11121211222102 its reverse (20122211212111), we get a palindrome (31243422434213).

Subtracting 11121211222102 from its reverse (20122211212111), we obtain a palindrome (9000999990009).

The spelling of 11121211222102 in words is "eleven trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred two".