11222121220101 has 256 divisors, whose sum is σ = 19976500454400. Its totient is φ = 6225776640000.

The previous prime is 11222121220099. The next prime is 11222121220139. The reversal of 11222121220101 is 10102212122211.

11222121220101 is a `hidden beast` number, since 1 + 1 + 222 + 121 + 220 + 101 = 666.

It is not a de Polignac number, because 11222121220101 - 2¹ = 11222121220099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222121220201) 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 255 ways as a sum of consecutive naturals, for example, 6723858495 + ... + 6723860163.

It is an arithmetic number, because the mean of its divisors is an integer number (78033204900).

Almost surely, 2^{11222121220101} is an apocalyptic number.

11222121220101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11222121220101 is a deficient number, since it is larger than the sum of its proper divisors (8754379234299).

11222121220101 is a wasteful number, since it uses less digits than its factorization.

11222121220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160 (or 2142 counting only the distinct ones).

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

Adding to 11222121220101 its reverse (10102212122211), we get a palindrome (21324333342312).

The spelling of 11222121220101 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, one hundred one".