11122210221221 has 8 divisors (see below), whose sum is σ = 12251119468224. Its totient is φ = 10012934178720.

The previous prime is 11122210221203. The next prime is 11122210221233. The reversal of 11122210221221 is 12212201222111.

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

It is a de Polignac number, because none of the positive numbers 2^k-11122210221221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11122210221193 and 11122210221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122210251221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4908299936 + ... + 4908302201.

It is an arithmetic number, because the mean of its divisors is an integer number (1531389933528).

Almost surely, 2^{11122210221221} is an apocalyptic number.

11122210221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11122210221221 is a deficient number, since it is larger than the sum of its proper divisors (1128909247003).

11122210221221 is a wasteful number, since it uses less digits than its factorization.

11122210221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9816602251.

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

Adding to 11122210221221 its reverse (12212201222111), we get a palindrome (23334411443332).

The spelling of 11122210221221 in words is "eleven trillion, one hundred twenty-two billion, two hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".