211100102121 has 32 divisors (see below), whose sum is σ = 285827990400. Its totient is φ = 138570508800.

The previous prime is 211100102111. The next prime is 211100102149. The reversal of 211100102121 is 121201001112.

It is not a de Polignac number, because 211100102121 - 2¹⁰ = 211100101097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211100102097 and 211100102106.

It is not an unprimeable number, because it can be changed into a prime (211100102111) 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, 43000215 + ... + 43005123.

It is an arithmetic number, because the mean of its divisors is an integer number (8932124700).

Almost surely, 2^211100102121 is an apocalyptic number.

It is an amenable number.

211100102121 is a deficient number, since it is larger than the sum of its proper divisors (74727888279).

211100102121 is a wasteful number, since it uses less digits than its factorization.

211100102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5769.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211100102121 its reverse (121201001112), we get a palindrome (332301103233).

The spelling of 211100102121 in words is "two hundred eleven billion, one hundred million, one hundred two thousand, one hundred twenty-one".