11121112120221 has 24 divisors (see below), whose sum is σ = 16304121198144. Its totient is φ = 7303177728000.

The previous prime is 11121112120213. The next prime is 11121112120301. The reversal of 11121112120221 is 12202121112111.

It is a happy number.

11121112120221 is a `hidden beast` number, since 111 + 211 + 1 + 2 + 120 + 221 = 666.

It is not a de Polignac number, because 11121112120221 - 2³ = 11121112120213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11121112120194 and 11121112120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121112120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19165096 + ... + 19736846.

It is an arithmetic number, because the mean of its divisors is an integer number (679338383256).

Almost surely, 2^{11121112120221} is an apocalyptic number.

It is an amenable number.

11121112120221 is a deficient number, since it is larger than the sum of its proper divisors (5183009077923).

11121112120221 is a wasteful number, since it uses less digits than its factorization.

11121112120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604081 (or 604078 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11121112120221 its reverse (12202121112111), we get a palindrome (23323233232332).

The spelling of 11121112120221 in words is "eleven trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty thousand, two hundred twenty-one".