11220101122221 has 96 divisors (see below), whose sum is σ = 17404694536320. Its totient is φ = 7218211968000.

The previous prime is 11220101122193. The next prime is 11220101122253. The reversal of 11220101122221 is 12222110102211.

11220101122221 is a `hidden beast` number, since 1 + 1 + 220 + 101 + 122 + 221 = 666.

It is not a de Polignac number, because 11220101122221 - 2⁷ = 11220101122093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220101122194 and 11220101122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220101122421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1130028385 + ... + 1130038313.

It is an arithmetic number, because the mean of its divisors is an integer number (181298901420).

Almost surely, 2^{11220101122221} is an apocalyptic number.

It is an amenable number.

11220101122221 is a deficient number, since it is larger than the sum of its proper divisors (6184593414099).

11220101122221 is a wasteful number, since it uses less digits than its factorization.

11220101122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11209 (or 11197 counting only the distinct ones).

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

Adding to 11220101122221 its reverse (12222110102211), we get a palindrome (23442211224432).

The spelling of 11220101122221 in words is "eleven trillion, two hundred twenty billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty-one".