11122210012221 has 24 divisors (see below), whose sum is σ = 20029607642304. Its totient is φ = 5777771434560.

The previous prime is 11122210012217. The next prime is 11122210012223. The reversal of 11122210012221 is 12221001222111.

11122210012221 is a `hidden beast` number, since 111 + 222 + 100 + 12 + 221 = 666.

It is not a de Polignac number, because 11122210012221 - 2² = 11122210012217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11122210012194 and 11122210012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122210012223) 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 23 ways as a sum of consecutive naturals, for example, 8024681856 + ... + 8024683241.

It is an arithmetic number, because the mean of its divisors is an integer number (834566985096).

Almost surely, 2^{11122210012221} is an apocalyptic number.

11122210012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11122210012221 is a deficient number, since it is larger than the sum of its proper divisors (8907397630083).

11122210012221 is a wasteful number, since it uses less digits than its factorization.

11122210012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16049365121 (or 16049365118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11122210012221 its reverse (12221001222111), we get a palindrome (23343211234332).

It can be divided in two parts, 11 and 122210012221, that multiplied together give a palindrome (1344310134431).

The spelling of 11122210012221 in words is "eleven trillion, one hundred twenty-two billion, two hundred ten million, twelve thousand, two hundred twenty-one".