11220101222121 has 32 divisors (see below), whose sum is σ = 18242080819200. Its totient is φ = 6759342386640.

The previous prime is 11220101222119. The next prime is 11220101222153. The reversal of 11220101222121 is 12122210102211.

11220101222121 is a `hidden beast` number, since 1 + 1 + 220 + 101 + 222 + 121 = 666.

It is not a de Polignac number, because 11220101222121 - 2¹ = 11220101222119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11220101222094 and 11220101222103.

It is not an unprimeable number, because it can be changed into a prime (11220101222621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113058541 + ... + 113157738.

It is an arithmetic number, because the mean of its divisors is an integer number (570065025600).

Almost surely, 2^{11220101222121} is an apocalyptic number.

11220101222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220101222121 is a deficient number, since it is larger than the sum of its proper divisors (7021979597079).

11220101222121 is a wasteful number, since it uses less digits than its factorization.

11220101222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226216466 (or 226216460 counting only the distinct ones).

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

Adding to 11220101222121 its reverse (12122210102211), we get a palindrome (23342311324332).

The spelling of 11220101222121 in words is "eleven trillion, two hundred twenty billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-one".