11222202221111 has 4 divisors (see below), whose sum is σ = 12825373966992. Its totient is φ = 9619030475232.

The previous prime is 11222202221071. The next prime is 11222202221117. The reversal of 11222202221111 is 11112220222211.

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

It is a cyclic number.

It is not a de Polignac number, because 11222202221111 - 2¹⁰ = 11222202220087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222202221117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801585872930 + ... + 801585872943.

It is an arithmetic number, because the mean of its divisors is an integer number (3206343491748).

Almost surely, 2^{11222202221111} is an apocalyptic number.

11222202221111 is a deficient number, since it is larger than the sum of its proper divisors (1603171745881).

11222202221111 is an equidigital number, since it uses as much as digits as its factorization.

11222202221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603171745880.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11222202221111 its reverse (11112220222211), we get a palindrome (22334422443322).

The spelling of 11222202221111 in words is "eleven trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-one thousand, one hundred eleven".