11121001222211 has 32 divisors (see below), whose sum is σ = 11913168415680. Its totient is φ = 10344918675456.

The previous prime is 11121001222193. The next prime is 11121001222271. The reversal of 11121001222211 is 11222210012111.

It is not a de Polignac number, because 11121001222211 - 2⁴² = 6722954711107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121001222211.

It is not an unprimeable number, because it can be changed into a prime (11121001222271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 629755100 + ... + 629772758.

It is an arithmetic number, because the mean of its divisors is an integer number (372286512990).

Almost surely, 2^{11121001222211} is an apocalyptic number.

11121001222211 is a deficient number, since it is larger than the sum of its proper divisors (792167193469).

11121001222211 is a wasteful number, since it uses less digits than its factorization.

11121001222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18983.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11121001222211 its reverse (11222210012111), we get a palindrome (22343211234322).

The spelling of 11121001222211 in words is "eleven trillion, one hundred twenty-one billion, one million, two hundred twenty-two thousand, two hundred eleven".