11002222202121 has 12 divisors (see below), whose sum is σ = 15893892339780. Its totient is φ = 7333986984480.

The previous prime is 11002222202099. The next prime is 11002222202233. The reversal of 11002222202121 is 12120222220011.

It is a happy number.

11002222202121 is a `hidden beast` number, since 1 + 10 + 0 + 222 + 220 + 212 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6674802942096 + 4327419260025 = 2583564^2 + 2080245^2 .

It is not a de Polignac number, because 11002222202121 - 2¹⁴ = 11002222185737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11002222202094 and 11002222202103.

It is not an unprimeable number, because it can be changed into a prime (11002222201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68900566 + ... + 69060063.

It is an arithmetic number, because the mean of its divisors is an integer number (1324491028315).

Almost surely, 2^{11002222202121} is an apocalyptic number.

It is an amenable number.

11002222202121 is a deficient number, since it is larger than the sum of its proper divisors (4891670137659).

11002222202121 is a wasteful number, since it uses less digits than its factorization.

11002222202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137969496 (or 137969493 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11002222202121 its reverse (12120222220011), we get a palindrome (23122444422132).

The spelling of 11002222202121 in words is "eleven trillion, two billion, two hundred twenty-two million, two hundred two thousand, one hundred twenty-one".