11221221011222 has 16 divisors (see below), whose sum is σ = 17717983664640. Its totient is φ = 5315235332328.

The previous prime is 11221221011219. The next prime is 11221221011243. The reversal of 11221221011222 is 22211012212211.

It is a junction number, because it is equal to n+sod(n) for n = 11221221011194 and 11221221011203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382343 + ... + 4752749.

It is an arithmetic number, because the mean of its divisors is an integer number (1107373979040).

Almost surely, 2^{11221221011222} is an apocalyptic number.

11221221011222 is a deficient number, since it is larger than the sum of its proper divisors (6496762653418).

11221221011222 is a wasteful number, since it uses less digits than its factorization.

11221221011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4437995.

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

Adding to 11221221011222 its reverse (22211012212211), we get a palindrome (33432233223433).

The spelling of 11221221011222 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, eleven thousand, two hundred twenty-two".