11012221022121 has 24 divisors (see below), whose sum is σ = 17353201245120. Its totient is φ = 6673838522400.

The previous prime is 11012221022081. The next prime is 11012221022171. The reversal of 11012221022121 is 12122012221011.

11012221022121 is a `hidden beast` number, since 110 + 122 + 210 + 221 + 2 + 1 = 666.

It is not a de Polignac number, because 11012221022121 - 2¹⁸ = 11012220759977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11012221022094 and 11012221022103.

It is not an unprimeable number, because it can be changed into a prime (11012221022171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 891915 + ... + 4777023.

It is an arithmetic number, because the mean of its divisors is an integer number (723050051880).

Almost surely, 2^{11012221022121} is an apocalyptic number.

11012221022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012221022121 is a deficient number, since it is larger than the sum of its proper divisors (6340980222999).

11012221022121 is a wasteful number, since it uses less digits than its factorization.

11012221022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913757 (or 3913754 counting only the distinct ones).

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

Adding to 11012221022121 its reverse (12122012221011), we get a palindrome (23134233243132).

The spelling of 11012221022121 in words is "eleven trillion, twelve billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-one".