211102111022121 has 32 divisors (see below), whose sum is σ = 341559768729600. Its totient is φ = 127796433420240.

The previous prime is 211102111022093. The next prime is 211102111022171. The reversal of 211102111022121 is 121220111201112.

It is a happy number.

211102111022121 is a `hidden beast` number, since 211 + 1 + 0 + 211 + 1 + 0 + 221 + 21 = 666.

It is not a de Polignac number, because 211102111022121 - 2⁹ = 211102111021609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211102111022094 and 211102111022103.

It is not an unprimeable number, because it can be changed into a prime (211102111022171) 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 31 ways as a sum of consecutive naturals, for example, 400402581 + ... + 400929458.

It is an arithmetic number, because the mean of its divisors is an integer number (10673742772800).

Almost surely, 2^{211102111022121} is an apocalyptic number.

It is an amenable number.

211102111022121 is a deficient number, since it is larger than the sum of its proper divisors (130457657707479).

211102111022121 is a wasteful number, since it uses less digits than its factorization.

211102111022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801332946 (or 801332940 counting only the distinct ones).

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

Adding to 211102111022121 its reverse (121220111201112), we get a palindrome (332322222223233).

The spelling of 211102111022121 in words is "two hundred eleven trillion, one hundred two billion, one hundred eleven million, twenty-two thousand, one hundred twenty-one".